Shan Deniston

{{Infobox college coach

| name = Shan Deniston

| image = File:Shan Deniston.png

| alt =

| caption =

| birth_date = {{Birth date|1919|2|28}}

| birth_place = Long Beach, California, U.S.

| death_date = {{Death date and age|2020|4|4|1919|2|28}}

| death_place = San Diego, California, U.S.

| alma_mater = St. Mary's College of California
Pasadena City College
Pepperdine University

| player_sport1 = Baseball

| player_years1 = 1938

| player_team1 = St. Mary's

| player_years2 = 1939

| player_team2 = Pasadena JC

| player_years3 = 1939

| player_team3 = El Paso Texans

| player_years4 = 1940–1942

| player_team4 = Portland Beavers

| player_years5 = 1940

| player_team5 = Boise Pilots

| player_years6 = 1940

| player_team6 = Wenatchee

| player_years7 = 1940

| player_team7 = Idaho Falls Russets

| player_years8 = 1940

| player_team8 = Big Spring Barons/Odessa Oilers

| player_years9 = 1941

| player_team9 = Anaheim Aces

| player_years10 = c. 1945

| player_team10 = Pepperdine

| player_years11 = 1947

| player_team11 = Mayfield Clothiers

| player_years12 = 1948

| player_team12 = Pittsburg Browns

| player_years13 = 1948

| player_team13 = Belleville Stags

| player_years14 = 1949

| player_team14 = Olean Oilers

| player_years15 = 1950

| player_team15 = Audubon Cardinals

| player_years16 = 1951

| player_team16 = Lakes-Denison

| player_years17 = 1951

| player_team17 = Des Moines Bruins

| player_years18 = 1951

| player_team18 = Colorado Springs Sky Sox

| player_years19 = 1952

| player_team19 = Kellogg Cardinals

| player_years20 = 1953–1954

| player_team20 = Storm Lake White Caps

| player_years21 = 1954

| player_team21 = New Ulm

| player_years22 = 1955

| player_team22 = Estherville Cardinals/Red Sox

| player_sport23 = Football

| player_years23 = 1938

| player_team23 = St. Mary's

| player_years24 = 1939

| player_team24 = Pasadena JC

| player_years25 = 1942

| player_team25 = Los Angeles Bulldogs

| player_years26 = 1942, 1945, 1948

| player_team26 = Hollywood Bears

| player_years27 = c. 1944

| player_team27 = San Diego Bombers

| player_years28 = 1944

| player_team28 = El Toro Marine Corps Air Station

| player_years29 = 1946

| player_team29 = Los Angeles

| player_sport30 = Basketball

| player_years30 = c. 1944

| player_team30 = Pepperdine

| player_positions = Catcher, outfielder, first baseman (baseball)
guard, quarterback, halfback (football)

| coach_sport1 = Baseball

| coach_years1 = 1944

| coach_team1 = Pepperdine

| coach_years2 = 1947

| coach_team2 = Mayfield Clothiers

| coach_years3 = 1948

| coach_team3 = Pittsburg Browns

| coach_years4 = 1948

| coach_team4 = Belleville Stags

| coach_years5 = 1949

| coach_team5 = Olean Oilers

| coach_years6 = 1950–1955

| coach_team6 = Drake

| coach_years7 = 1950

| coach_team7 = Audubon Cardinals

| coach_years8 = 1951

| coach_team8 = Lakes-Denison

| coach_years9 = 1953–1954

| coach_team9 = Storm Lake White Caps

| coach_years10 = 1955

| coach_team10 = Estherville Cardinals/Red Sox

| coach_years11 = 1985–1986

| coach_team11 = Lincoln HS

| coach_sport12 = Football

| coach_years12 = 1946–1948

| coach_team12 = Pepperdine (GA/E)

| coach_years13 = 1949–1955

| coach_team13 = Drake (E)

| coach_years14 = 1956

| coach_team14 = La Jolla HS

| coach_years15 = 1957–1969

| coach_team15 = Lincoln HS

| coach_years16 = 1971–1976

| coach_team16 = San Diego HS

| coach_years17 = 1977–1978

| coach_team17 = United States International

| coach_sport18 = Basketball

| coach_years19 = 1946

| coach_team19 = Pepperdine (asst.)

| coach_sport20 = Gymnastics

| coach_years21 = 1947–1948

| coach_team21 = Pepperdine

| admin_years1 = c. 1949–1955

| admin_team1 = Drake (intramural director)

| awards =

KITTY League all-star (1947)
All-Iowa (1951)
San Diego Sports Hall of Champions

}}

Shannon Willis Deniston (February 28, 1919 – April 4, 2020) was an American athlete and sports coach. A native of Long Beach, Deniston attended St. Mary's College of California for one year before starting a professional baseball career in 1939. He played for several minor league teams before serving in World War II at the San Diego Marine Corps Base. While there he also coached the baseball team at Pepperdine University, where he received a degree, and played professional football in the Pacific Coast Professional Football League (PCPFL) and on a military service team. After the war was over Deniston returned to professional baseball as a player-manager, spending 1947 to 1955 both playing for and managing several minor league teams while also serving as a college coach at Pepperdine and Drake University. Deniston retired from playing in 1956 and became a high school football coach, a position he would serve in until 1977, when he was named head coach at United States International University. He retired from coaching in 1987. Deniston became a centenarian in 2019 and died at the age of 101 in 2020.

Early life and college career

Deniston was born on February 28, 1919, in Long Beach, California. He grew up in Compton, and attended Alhambra High School.{{Cite news|url=https://www.sandiegouniontribune.com/sports/high-school-preps/story/2020-04-05/legendary-high-school-coach-shan-deniston-dies-at-101|newspaper=San Diego Union-Tribune|title=Legendary high school coach Shan Deniston dies at 101 |author=Maffei, John|date=April 5, 2020}} While at Alhambra he competed in football, track, basketball, and baseball.{{Cite news|url=https://www.newspapers.com/clip/94732204/des-moines-tribune/|newspaper=Des Moines Tribune|via=Newspapers.com|title=Deniston Can Sing 'Class D Blues'|author=White, Maury|date=September 12, 1949|page=10}} {{Open access}} Deniston was described by The Long Beach Sun as "an outstanding end and one of the best pass grabbers in the Southland prep ranks."{{Cite news|url=https://www.newspapers.com/clip/94744390/the-long-beach-sun/|newspaper=The Long Beach Sun|via=Newspapers.com|date=October 22, 1937|page=15|title=Wilson Opens League Race Against Alhambra Tonight}} {{Open access}} Deniston attended St. Mary's College of California for one year, in 1938, before accepting an offer to play professional baseball by the New York Yankees.{{Cite news|url=https://www.newspapers.com/clip/94731983/the-albuquerque-tribune/|newspaper=The Albuquerque Tribune|via=Newspapers.com|title=New Catcher Sent To El Paso By Yankees|date=April 22, 1939|page=4}} {{Open access}} He also briefly attended Pasadena Junior College in 1939, playing catcher in baseball and halfback in football.{{Cite news|url=https://www.newspapers.com/clip/94734372/estherville-daily-news/|page=4|newspaper=Estherville Daily News|via=Newspapers.com|title=Shan Deniston Has Had Versatile Coaching Career|date=February 24, 1955}} {{Open access}}{{Cite news|url=https://www.newspapers.com/clip/94747318/metropolitan-pasadena-star-news/|newspaper=Metropolitan Pasadena Star-News|page=18|via=Newspapers.com|date=March 5, 1947|title=Deniston Now With Kitty League Team}} {{Open access}}

Playing career

=Baseball (1939–1942)=

Despite mainly playing first baseman, Deniston was signed by the New York Yankees as an outfielder in 1939. He attended Yankees spring training in St. Petersburg, Florida, before being sent to the minor league class D El Paso Texans of the Arizona–Texas League. The Texans had him play catcher and compete with Art Gagliardi for the starting role.{{Cite news|url=https://www.newspapers.com/clip/94745404/el-paso-herald-post/|newspaper=El Paso Herald-Post|date=April 19, 1939|page=15|via=Newspapers.com|title=Texans Bolstered By Catcher And Outfielder}} {{Open access}} He made his debut against the Tucson Cowboys in a 11–2 win, replacing Curdele Lloyd and making two hits. Overall, in the 1939 season, Deniston played in 117 games, appearing at bat 482 times, and making 139 hits. He made 24 doubles, eight triples, and two home runs.{{Cite web|url=https://www.baseball-reference.com/register/player.fcgi?id=denist001sha|website=Baseball-Reference.com|title=Shan Deniston Minor Leagues Statistics & History}}

In the 1940 season, Deniston played for five teams in four different leagues. He started the season with the double-A Portland Beavers of the Pacific Coast League (PCL), appearing in eight games with three hits, before playing for the class-C Boise Pilots of the Pioneer League. He was sent on option to the Idaho Falls Russets, where he appeared in one game before being released.{{Cite news|url=https://www.newspapers.com/clip/94760426/the-post-register/|newspaper=The Post-Register|via=Newspapers.com|title=Deniston Released From Russet Club|date=May 7, 1940|page=8}} {{Open access}} After being released, he played for the Big Spring Barons/Odessa Oilers in the West Texas–New Mexico League, appearing in 12 games. With the Barons/Oilers he made ten hits, three doubles, one triple and two home runs. He also played for a team in Wenatchee, Washington.{{Cite news|url=https://www.newspapers.com/clip/94733025/metropolitan-pasadena-star-news/|newspaper=Metropolitan Pasadena Star-News|via=Newspapers.com|date=January 21, 1949|page=13|title=Now With Waves Shan Deniston Pilots Olean}} {{Open access}}

In February 1941, Deniston returned to the Portland Beavers on a one-year contract as a catcher.{{Cite news|url=https://www.newspapers.com/clip/94761985/oakland-tribune/|newspaper=Oakland Tribune|via=Newspapers.com|date=February 9, 1941|title=Five Beavers Sign Contracts for Year|page=13}} {{Open access}} He ended up playing the season in the California League for the Anaheim Aces, appearing in eight games and making three hits. He also spent time with Portland in 1942, but did not appear in any games.

=Boxing (1940)=

Deniston briefly was a boxer in 1940, and won the California State Golden Gloves championship in the lightweight division that year.{{Cite news|url=https://www.newspapers.com/clip/94827619/the-ponca-city-news/|newspaper=The Ponca City News|via=Newspapers.com|date=January 22, 1948|page=16|title=Shan Deniston to Pilot Pittsburg, Kan., Club}} {{Open access}}

=Football (1942–1948)=

In 1942, Deniston played professional football in the Pacific Coast Professional Football League (PCPFL) for both the Los Angeles Bulldogs and Hollywood Bears, as a right guard for the Bulldogs and a halfback for the Bears.{{Cite web|url=https://www.profootballarchives.com/playerd/deni01200.html|website=Pro Football Archives|title=Shan Deniston Stats}} He was described by The Los Angeles Times as a "demon blocker."{{Cite news|url=https://www.newspapers.com/clip/94763305/the-los-angeles-times/|newspaper=The Los Angeles Times|date=November 22, 1942|page=26|title=Bears Oppose Bulldogs Today|via=Newspapers.com}} {{Open access}} With the Bears in a game against the Bulldogs, Deniston caught a fifteen-yard pass that set up a Hollywood touchdown.{{Cite news|url=https://www.newspapers.com/clip/94763569/the-los-angeles-times/|newspaper=The Los Angeles Times|via=Newspapers.com|pages=9, 30|date=November 23, 1942|title=Bulldogs Nip Bears in Late Splurge, 14-12}} {{Open access}}

Deniston attended Pepperdine University in 1943, and spent the year out of sports. In 1944, he was drafted to serve in World War II, and trained at the San Diego Marine Corps Base.{{Cite news|url=https://www.newspapers.com/clip/94732125/los-angeles-evening-citizen-news/|newspaper=Los Angeles Evening Citizen News|via=Newspapers.com|title=Marine Pvt. Shannon W. Deniston|date=May 31, 1944|page=7}} {{Open access}} That year he played football for the El Toro Flying Marines military service team that compiled a 8–1 record and was ranked number sixteen in the country. Deniston also played for the San Diego Bombers.

In 1945, after being released by the Marines, Deniston returned to the Hollywood Bears in the PCPFL, playing the halfback and quarterback positions. He was a starter in four games. Deniston played for a team in Los Angeles in 1946, and returned for a final time to the Bears in 1948.

=Basketball (1944)=

In 1944, Deniston played for the Pepperdine basketball team and served as an assistant coach two years later.{{Cite news|url=https://www.newspapers.com/clip/94800209/the-tennessean/|newspaper=The Tennessean|via=Newspapers.com|date=July 11, 1947|page=34|title=All-Star Skipper Coaches Football, Basketball Too}} {{Open access}}

=Baseball (1945–1955)=

While in the Marines, bone chips and calcium deposits had weakened Deniston's arm, and he "had given up hope of advancing as a baseball player." Describing his arm, Deniston said he "couldn't throw out Whistler's mother trying to steal second." Despite this, he continued playing, with the Pepperdine Waves baseball team in 1945, and scored a home run in their 20–14 win over UCLA.{{Cite news|url=https://www.newspapers.com/clip/94765783/the-los-angeles-times/|newspaper=The Los Angeles Times|title=Waves Top Bruins At Baseball|date=April 15, 1945|page=23|via=Newspapers.com}} {{Open access}}

After graduating from Pepperdine in 1947, he was named an assistant coach at the school and additionally was named by the St. Louis Browns as a player-manager of the Mayfield Clothiers minor league team. With the Clothiers in 1947, he appeared in 107 total games, appeared at-bat 350 times, and made 105 hits. Of his hits, 21 were doubles, one was a triple, and 15 scored home runs.{{efn|The Ponca City News reported 18 home runs in 1948.}} His 15 home runs were the largest single-season total he made in his career.

In January 1948, St. Louis Browns business manager J. W. Baker named Deniston a player-manager for the Pittsburg Browns of the Kansas-Oklahoma-Missouri League (KOM). He replaced Jim Crandall who had left for the Aberdeen Pheasants of the Northern League. He appeared in a total of 48 games before resigning mid-season to return to Pepperdine University. He appeared at-bat 129 times, making 34 hits, 15 doubles and three home runs. "When I left the club early to go back to Pepperdine it was three games out of first," Deniston later said. "Then it lost the next sixteen in a row." His position was filled in by Donald Smith.{{Cite news|url=https://www.newspapers.com/clip/94829174/miami-news-record/|newspaper=Miami News-Record|via=Newspapers.com|date=July 21, 1948|page=2|title=Pittsburg Changes Pilots in KOM Race}} {{Open access}}

Deniston was later assigned to coach the Belleville Stags of the Illinois State League.{{Cite news|url=https://www.newspapers.com/clip/94829527/st-louis-post-dispatch/|newspaper=St. Louis Post-Dispatch|via=Newspapers.com|date=July 29, 1948|page=14|title=Short Waves}} {{Open access}} Near the end of the season, Deniston placed second on the team in batting average with a mark of .322.{{Cite news|url=https://www.newspapers.com/clip/94829743/belleville-daily-advocate/|newspaper=Belleville Daily Advocate|via=Newspapers.com|date=August 21, 1948|title=Richie Martz Leading State League Hitter|page=6}} {{Open access}} He appeared in a total of 29 games, and was at-bat 107 times, making 35 hits, 11 doubles, one triple, and four home runs. His final batting average was .327.

In 1949, Deniston was named player-manager of the Olean Oilers in the Pennsylvania–Ontario–New York League (PONY).{{Cite news|url=https://www.newspapers.com/clip/94733091/times-herald/|newspaper=Times Herald|via=Newspapers.com|date=January 20, 1949|page=19|title=Deniston, California Native, Will Be Oilers Player-Pilot}} {{Open access}} Deniston, 30 years old at the time, was 11 years older than the team average. Deniston appeared in 65 games, mainly as a catcher, and was at-bat 203 times, making 54 hits, seven doubles and seven home runs. He also scored 32 runs-batted-in and had five stolen bases as Olean finished with a record of 39–86. After the season ended, Deniston was named a coach at Drake University as well as manager of the Audubon Cardinals for the 1950 season.{{Cite news|url=https://www.newspapers.com/clip/94841038/council-bluffs-nonpareil/|newspaper=Council Bluffs Nonpareil|via=Newspapers.com|date=December 11, 1949|title=Deniston to Head Audubon's Cards|page=38}} {{Open access}}

Deniston was with Audubon for 39 games of the 1950 season, playing catcher, before resigning for "the best interest of the team."{{Cite news|url=https://www.newspapers.com/clip/94733309/carroll-daily-times-herald/|newspaper=Carroll Daily Times Herald|via=Newspapers.com|date=August 15, 1950|page=3|title=Shan Deniston Resigns As Audubon Card Manager}} {{Open access}} The Cardinals compiled a record of 18–21 in the Iowa State League (ISL) with Deniston. The following year, he played in the same league for Lakes-Denison serving as a player-manager, before being signed to play in the Western League.{{Cite news|url=https://www.newspapers.com/clip/5334253/the-des-moines-register/|newspaper=The Des Moines Register|via=Newspapers.com|date=August 5, 1951|page=28|author=Bryson, Bill|title=Bruins Drop Deniston, Sky Sox Sign Him}} {{Open access}}

Mid-season in 1951, Deniston was signed to play catcher by the Des Moines Bruins of the Western League. His signing was due to several injuries to their previous players at that position.{{Cite news|url=https://www.newspapers.com/clip/94877454/the-des-moines-register/|newspaper=The Des Moines Register|via=Newspapers.com|date=August 5, 1951|page=25|title=Shan Deniston Joins Sky Sox}} {{Open access}} He batted .281 with them, scoring one home run and three runs-batted-in before being released. The Bruin manager Al Todd said that "he hated to see Deniston leave," but that "with recent player acquisitions, Des Moines was above the maximum limit for salaries paid by a Class-A club." After being released, Deniston was signed by the Colorado Springs Sky Sox of the same league, who needed a catcher after injuries to all their players at the position. Following the season, he was named all-Iowa for his play at Des Moines.{{Cite news|url=https://www.newspapers.com/clip/94879028/the-bayard-news/|newspaper=The Bayard News|via=Newspapers.com|date=October 11, 1951|page=1|title=Feller Will Pitch For Linden Ball Club}} {{Open access}}

In 1952, Deniston played catcher for the Kellogg Cardinals, and by July held the league lead in batting average with .485.{{Cite news|url=https://www.newspapers.com/clip/94880943/the-des-moines-register/|newspaper=The Des Moines Register|via=Newspapers.com|author=Wilson, Brad|date=July 8, 1952|page=14|title=Kellogg's Leonetti Again Aims at Tourney Bat Title}} {{Open access}} In a win over the Marshalltown Ansons, Deniston scored two home runs.{{Cite news|url=https://www.newspapers.com/clip/94881929/des-moines-tribune/|newspaper=Des Moines Tribune|author=North, Jack|via=Newspapers.com|page=37|date=June 19, 1952|title=Three D. M. Players With Kellogg}} {{Open access}}

In 1953, Deniston was named player-manager of the Storm Lake White Caps in the Iowa State League.{{Cite news|page=50|url=https://www.newspapers.com/clip/94733932/council-bluffs-nonpareil/|newspaper=Council Bluffs Nonpareil|via=Newspapers.com|date=May 10, 1953|title=Shan Deniston Returns}} {{Open access}} Against the Carroll Merchants, he scored the game-winning home run in the bottom of the ninth inning.{{Cite news|url=https://www.newspapers.com/clip/94882845/des-moines-tribune/|newspaper=Des Moines Tribune|via=Newspapers.com|date=June 26, 1953|title=Deniston's Homer Wins|page=20}} {{Open access}} In June, he took the league lead in home runs with three.{{Cite news|url=https://www.newspapers.com/clip/94733766/des-moines-tribune/|newspaper=Des Moines Tribune|via=Newspapers.com|date=June 24, 1953|page=19|title=Amateurs}} {{Open access}} By July, Deniston had made six home runs, leading the league, and also was ISL runs-batted-in leader with 27.{{Cite news|url=https://www.newspapers.com/clip/94734029/carroll-daily-times-herald/|newspaper=Carroll Daily Times Herald|via=Newspapers.com|date=July 17, 1953|title=Manager Shan Deniston, who leads the league in home runs with six, has the runs batted in lead with 27.|page=2}} {{Open access}} He finished the season tied with Walt Menke for league lead in home runs hit.{{Cite news|url=https://www.newspapers.com/clip/94734151/carroll-daily-times-herald/|newspaper=Carroll Daily Times Herald|via=Newspapers.com|title=2-Dozen Homers|page=2|date=July 20, 1954}} {{Open access}}

In 1954, Deniston started the season with New Ulm, before suffering a broken finger and leaving the team. He later returned to Storm Lake as a player-manager, and finished the season with them.

In 1955, Deniston announced he had accepted a position as catcher, first baseman and manager of the Estherville Cardinals/Red Sox.{{Cite news|url=https://www.newspapers.com/clip/94734557/globe-gazette/|newspaper=Globe-Gazette|via=Newspapers.com|date=February 17, 1955|title=Shan Deniston Will Manage at Estherville|page=14}} {{Open access}} In a 6–7 loss against Sherburn, Deniston had a "perfect night," hitting two doubles and two singles.{{Cite news|url=https://www.newspapers.com/clip/94894195/estherville-daily-news/|newspaper=Estherville Daily News|via=Newspapers.com|date=June 10, 1955|page=6|title=Red Sox Fall to Sherburn, 7 to 6}} {{Open access}} After finishing the season with them, Deniston retired and accepted a coaching position at La Jolla High School.{{Cite news|url=https://www.newspapers.com/clip/94896254/chula-vista-star-news/|newspaper=Chula Vista Star-News|via=Newspapers.com|date=September 27, 1956|page=4|title=Mariners Inaugurate 1956 Season At La Jolla With Afternoon Game}} {{Open access}}

Coaching career

While at Pepperdine in 1944, he served as head coach of their baseball team. In 1946, after returning from World War II, Deniston assisted their football team while also playing the sport professionally. After he graduated from the school in 1947, he was named a full-time assistant football coach, gymnastics coach, and boxing teacher, with the understanding that he would be free to play professional baseball as well. Deniston had also originally accepted a position as baseball coach, but had to resign as he did not have enough time to coach Pepperdine while playing for and managing other teams.

Also in 1947, Deniston was assigned by the St. Louis Browns to play for and manage the Mayfield Clothiers minor league team. He led them to a 72–52 record, with a winning percentage of .581. Following the season, he was named to the Kentucky–Illinois–Tennessee League (KITTY League) all-star team for his work as manager.{{Cite news|url=https://www.newspapers.com/clip/94800953/the-paducah-sun-democrat/|newspaper=The Paducah Sun-Democrat|via=Newspapers.com|page=13|date=July 10, 1947|title=Kitty League All-Stars Play Oilers At Owensboro Tonight}} {{Open access}}

Deniston later was named manager of the Belleville Stags in the Illinois State League. He was a replacement for Jerry Nimitz.

In 1949, Deniston was named player-manager of the Olean Oilers in the Pennsylvania–Ontario–New York League (PONY). But, as "herding a bunch of youngsters (the average Olean player age was 19 years old) poses pitfalls not encountered in higher leagues," the Oilers only won 39 of 125 games under Deniston's leadership, just a .312 winning percentage.

Following the 1949 baseball season, Deniston was named head baseball coach and football ends coach at Drake University. He also accepted a position to be 1950 manager of the Audubon Cardinals in baseball. After Audubon compiled an 18–21 Iowa State League record to start the season, he resigned for "the best interest of the team."

With Drake University, Deniston served as head coach in baseball, an assistant football coach, director of intramurals and as a physical education teacher from 1949 to 1955.

For part of the 1951 season, Deniston played catcher and served as manager for Lakes-Denison in the Iowa State League. In 1952, he served as manager of the Kellogg Cardinals in the Hawkeye State League (HSL).

In 1953, Deniston was named player-manager of the Storm Lake White Caps in the Iowa State League. For the start of the 1954 season, Deniston played for New Ulm, before suffering an injury that made him return to Storm Lake as manager.

In 1955, Deniston announced he had accepted a position as catcher, first baseman and manager of the Estherville Cardinals/Red Sox. After finishing the season with them, Deniston retired and accepted a position as head football coach of La Jolla High School.

After coaching La Jolla High School in 1956, Deniston was named head football coach at Lincoln High School in San Diego for the 1957 season. He replaced Walt Harvey, who had left for Will C. Crawford High School.{{Cite news|url=https://www.newspapers.com/clip/95111127/chula-vista-star-news/|newspaper=Chula Vista Star-News|via=Newspapers.com|date=September 26, 1957|page=6|title=Spartans to Host Lincoln in 1957 Curtain Raiser}} {{Open access}} Deniston ended up coaching the school's football team for thirteen seasons, from 1957 to 1969, winning several championships. From 1964 to 1968, his teams won 41 out of 50 games, a .82 winning percentage. His 1965 team posted a 10–1 record and won the San Diego Section championship game against Point Loma. In 1967, he led them to another 10–1 record with quarterback Jerry Powell, who later played professionally, outscoring opponents 313–75 and winning the championship game. He left following the 1969 season.

Deniston was named head coach at San Diego High School in 1971.{{Cite news|url=https://www.newspapers.com/clip/95112432/the-des-moines-register/|newspaper=The Des Moines Register|via=Newspapers.com|date=January 24, 1971|title=Shan a Head Man|page=30}} {{Open access}} He served in that position until resigning in 1976, following a season with just one win out of nine games.{{Cite news|url=https://www.newspapers.com/clip/94735284/times-advocate/|newspaper=Times-Advocate|via=Newspapers.com|page=13|date=November 15, 1976|title=Morgan quits as coach at San Dequito}} {{Open access}}

In 1977, Deniston was named head football coach at United States International University.{{Cite news|url=https://www.newspapers.com/clip/95112897/the-san-bernardino-county-sun/|newspaper=The San Bernardino County Sun|via=Newspapers.com|date=October 1, 1977|page=30|title=USIU-look looks good for U of R}} {{Open access}} He served in that position for two seasons before being replaced by Tom Walsh; the team folded the next year.

Deniston later returned to Lincoln High School as head baseball coach, spending 1985 to 1986 in that position before retiring.{{Cite news|url=https://www.newspapers.com/clip/95113391/the-los-angeles-times/|author=Cooper, Tony|newspaper=The Los Angeles Times|via=Newspapers.com|date=April 11, 1985|page=75|title=Taylor Comes to Lincoln's Rescue in Win Over Morse}} {{Open access}}

Later life and death

In 1978, Deniston umpired one game in the National League (NL) when the regular umpires went on strike.{{Cite news|url=https://www.newspapers.com/clip/95113042/the-des-moines-register/|newspaper=The Des Moines Register|via=Newspapers.com|date=September 13, 1978|title=Shan Deniston|page=21|author=White, Maury}} {{Open access}} He umpired as a volunteer for the game between the New York Mets and San Diego Padres.

Deniston celebrated his 100th birthday on February 28, 2019.{{Cite web|url=https://www.kusi.com/hornets-of-all-ages-gather-to-celebrate-former-lincoln-coachs-100th-birthday/|website=KUSI-TV|title=Hornets of all ages gather to celebrate former Lincoln coach's 100th birthday|date=March 4, 2019}}{{Cite news|url=https://www.sandiegouniontribune.com/sports/high-school-preps/sd-sp-preps-coach-shan-deniston-lincoln-20190302-story.html|newspaper=San Diego Union-Tribune|title=Cheers for coach Shan Deniston's 100th birthday|date=March 2, 2019|author=Maffei, John}} He died on April 4, 2020, in San Diego, at the age of 101.{{Cite web|url=https://www.legacy.com/us/obituaries/sandiegouniontribune/name/shannon-deniston-obituary?id=8183754|website=San Diego Union-Tribune|via=Legacy.com|title=Shannon W. Deniston|date=April 17, 2020}}

Jerry Powell, who played high school football under Deniston and later professionally, said "from Pop Warner, to high school, college and the pros, I played for a lot of coaches. Without a doubt, Shan Deniston was the best man, the best coach I ever played for. He was truly a blessing and will be sorely missed."