![Tennis player Nicolas Kiefer of Germany celebrates after winning his match against Juergen Melzer of Austria at the ATP Masters tournament in Hamburg, northern Germany, on Tuesday, May 16, 2006. Kiefer won Tennis player Nicolas Kiefer of Germany celebrates after winning his match against Juergen Melzer of Austria at the ATP Masters tournament in Hamburg, northern Germany, on Tuesday, May 16, 2006. Kiefer won](https://c8.alamy.com/comp/2PD3163/tennis-player-nicolas-kiefer-of-germany-celebrates-after-winning-his-match-against-juergen-melzer-of-austria-at-the-atp-masters-tournament-in-hamburg-northern-germany-on-tuesday-may-16-2006-kiefer-won-6-2-3-6-6-2-ap-photokai-uwe-knoth-2PD3163.jpg)
Tennis player Nicolas Kiefer of Germany celebrates after winning his match against Juergen Melzer of Austria at the ATP Masters tournament in Hamburg, northern Germany, on Tuesday, May 16, 2006. Kiefer won
![Nicolas Kiefer of Germany in action during his match against Rafael Nadal from Spain on day 5 of the US Open at the USTA Billie Stock Photo - Alamy Nicolas Kiefer of Germany in action during his match against Rafael Nadal from Spain on day 5 of the US Open at the USTA Billie Stock Photo - Alamy](https://c8.alamy.com/comp/C1Y5X3/nicolas-kiefer-of-germany-in-action-during-his-match-against-rafael-C1Y5X3.jpg)
Nicolas Kiefer of Germany in action during his match against Rafael Nadal from Spain on day 5 of the US Open at the USTA Billie Stock Photo - Alamy
![Nicolas Kiefer at the Los Angeles Tennis Open Editorial Stock Image - Image of wide, professional: 11418909 Nicolas Kiefer at the Los Angeles Tennis Open Editorial Stock Image - Image of wide, professional: 11418909](https://thumbs.dreamstime.com/z/nicolas-kiefer-los-angeles-tennis-open-11418909.jpg)