Date of Birth: 
Place of Birth: Bratislava, Bratislava Region, Slovakia
About Ján Krošlák
- Ján Krošlák (born 17 October 1974) is a former tennis player from Slovakia, who turned professional in 1993. He represented his native country at the 1996 Summer Olympics in Atlanta, United States, where he was defeated in the first round by America's MaliVai Washington.
- The right-hander reached his career-high ATP singles ranking of World No.
- 53 in September 1999. In the 1998 Davis Cup he played with Martin Hromec.
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