Thomaz Koch

{{short description|Brazilian tennis player}}

{{similar names|Thomas Koch (disambiguation)}}

{{Use mdy dates|date=May 2016}}

{{Infobox tennis biography

|image= Thomaz Koch.jpg

|caption=Koch in 2018

|name= Thomaz Koch

|fullname=

|country= {{BRA}}

|residence= Porto Alegre, Brazil

|birth_date= {{birth date and age|df=y|1945|5|11}}

|birth_place= Porto Alegre, Brazil

|height=

|turnedpro= 1968 (amateur from 1961)

|retired= 1985

|plays= Left-handed (one-handed backhand)

|careerprizemoney=

|singlesrecord= {{tennis record|won=556|lost=341}}{{cite web |title=Players:Koch, Thomaz. |url=https://thetennisbase.com/players/search/e|website=The Tennis Base |publisher=Tennismem SL |access-date=19 November 2023 |location=Madrid|url-access=subscription}}

|singlestitles=36

|highestsinglesranking= No. 12 (1967)

|AustralianOpenresult=

|FrenchOpenresult= QF (1968)

|Wimbledonresult= QF (1967)

|USOpenresult= QF (1963)

|doublesrecord= 111–99 (Open era)

|doublestitles= 3 (Open era)

|highestdoublesranking=

|AustralianOpenDoublesresult=

|FrenchOpenDoublesresult =

|WimbledonDoublesresult = SF (1971)

|USOpenDoublesresult =

|Mixed= yes

|FrenchOpenMixedresult= W (1975)

|WimbledonMixedresult= QF (1971)

| medaltemplates-expand= yes

| medaltemplates=

{{Medal|Country|{{BRA}}}}

{{Medal|Sport|Tennis, Pan American Games}}

{{Medal|Gold|1967 Winnipeg|Men's Singles}}

{{Medal|Gold|1967 Winnipeg|Men's Doubles}}

}}

Thomaz Koch (born 11 May 1945) is a former tennis player from Brazil. He won one Grand Slam title in mixed doubles at the 1975 French Open. In singles he was a quarterfinalist in singles at the French Open, Wimbledon and the U.S. National Championships. Koch was active from 1961 to 1985 and played close to 900 singles matches, and won 36 career singles titles. He was ranked World No 12 player for 1967.{{cite web |title=Barcelona Open Banc Sabadell {{!}} 68º Trofeo Conde de Godó |url=http://www.barcelonaopenbancsabadell.com/ |website=www.barcelonaopenbancsabadell.com}} His highest computer ranking which was past his peak period in the ATP singles ranking was No. 24 (achieved on December 20, 1974). In addition he also won 5 challenger satellite tour tiles towards the end of his career. He won also two gold medals in the men's tennis competition at the 1967 Pan American Games.

He played his first tournament in 1961 at the Santos Open where he reached the final. He won his first senior title in 1964 at the Swiss International Championships against compatriot Ronald Barnes. He won his final main tour title in 1976 at the Malta International against Britain's Roger Taylor. He played his final singles tournament in 1984 at the Guarujá Open in 1984. He also won the Wimbledon Plate twice, in 1969 and 1975.