![German tennis pro Nicolas Kiefer looks frustrated during his match against Belarusian Mirnyi at the ATP German Masters in Hamburg, Germany, Wednesday, 17 May 2006. Kiefer lost the match in two sets German tennis pro Nicolas Kiefer looks frustrated during his match against Belarusian Mirnyi at the ATP German Masters in Hamburg, Germany, Wednesday, 17 May 2006. Kiefer lost the match in two sets](https://c8.alamy.com/comp/D3NHRG/german-tennis-pro-nicolas-kiefer-looks-frustrated-during-his-match-D3NHRG.jpg)
German tennis pro Nicolas Kiefer looks frustrated during his match against Belarusian Mirnyi at the ATP German Masters in Hamburg, Germany, Wednesday, 17 May 2006. Kiefer lost the match in two sets
![Nicolas Kiefer, Germany, playing a backhand, tennis, the ITF Grand Slam tournament, French Open 2009, Stock Photo, Picture And Rights Managed Image. Pic. IBR-1186941 | agefotostock Nicolas Kiefer, Germany, playing a backhand, tennis, the ITF Grand Slam tournament, French Open 2009, Stock Photo, Picture And Rights Managed Image. Pic. IBR-1186941 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/0fd978c8fe70bbffe541609013da583a/ibr-1186941.jpg)
Nicolas Kiefer, Germany, playing a backhand, tennis, the ITF Grand Slam tournament, French Open 2009, Stock Photo, Picture And Rights Managed Image. Pic. IBR-1186941 | agefotostock
![Nicolas Kiefer of Germany reacts after losing a point against Thomas Johansson of Sweden during their final match at the St Petersburg Open ATP tennis tournament October 30, 2005. Kiefer lost the Nicolas Kiefer of Germany reacts after losing a point against Thomas Johansson of Sweden during their final match at the St Petersburg Open ATP tennis tournament October 30, 2005. Kiefer lost the](https://c8.alamy.com/comp/2E7BKDD/nicolas-kiefer-of-germany-reacts-after-losing-a-point-against-thomas-johansson-of-sweden-during-their-final-match-at-the-st-petersburg-open-atp-tennis-tournament-october-30-2005-kiefer-lost-the-match-4-6-2-6-reutersalexander-demianchuk-2E7BKDD.jpg)