GPTCA Board Member
Tennis Coach
- 2019 - coach of 3-time Grand Slam Champion Angelique Kerber
- 2019 - up to date - German Fed Cup Team Captain
ATP pro tennis player (1995 - 2012)
- reached a career high ranking of World No. 5 (2004)
- Australian Open (2003) and Monte-Carlo Masters (2004) finalist
- Semifinalist Wimbledon (2008) and ATP Masters in Houston (2003)
- won four ATP singles titles (Lyon, Tokyo, Shanghai, Doha)
- Member of German Olympic Team 2000, 2004, 2008
- Olympic silver medalist (Athens, 2004), doubles with Nicolas Kiefer
- German Davis Cup Team Member (1999-2009)
World Team Cup Champion 2005
Member ATP Player Council 2002
President, ATP Player Council (2003-2004)
Member ITF Athletic Commission (2005-2006)
