Sadie McMahon

{{Short description|American baseball player (1867–1954)}}

{{Use mdy dates|date=July 2024}}

{{Infobox baseball biography

|name=Sadie McMahon

|image=Sadie McMahon crop.jpg

|position=Pitcher

|birth_date={{Birth date|1867|9|19}}

|birth_place=Wilmington, Delaware, U.S.

|death_date={{death date and age|1954|2|20|1867|9|19}}

|death_place=New Castle, Delaware, U.S.

|bats=Right

|throws=Right

|debutleague = MLB

|debutdate=July 5

|debutyear=1889

|debutteam=Philadelphia Athletics

|finalleague = MLB

|finaldate=July 12

|finalyear=1897

|finalteam=Brooklyn Bridegrooms

|statleague = MLB

|stat1label=Win–loss record

|stat1value=173–127

|stat2label=Earned run average

|stat2value=3.51

|stat3label=Strikeouts

|stat3value=967

|teams=

• Philadelphia Athletics (1889–1890)
• Baltimore Orioles (1890–1896)
• Brooklyn Bridegrooms (1897)

|highlights=

}}

John Joseph "Sadie" McMahon (September 19, 1867 – February 20, 1954) was an American professional baseball player who played pitcher in the Major Leagues from 1889 to 1897. McMahon played for the Philadelphia Athletics, Baltimore Orioles, and the Brooklyn Bridegrooms.

McMahon was born in Wilmington, Delaware and grew up in the Henry Clay Village area. In 1954, McMahon died and was buried in St. Joseph on the Brandywine Church Cemetery in Wilmington. He was inducted into the Delaware Sports Museum and Hall of Fame in 1979.