![Frederik Nielsen on X: "My time as a professional tennis player is up. It's with disbelief I look back at my 20 years on tour. I'm leaving with pride and happiness over what turned out to be. Thank you to all the people I've shared time with that made it epic! I look Frederik Nielsen on X: "My time as a professional tennis player is up. It's with disbelief I look back at my 20 years on tour. I'm leaving with pride and happiness over what turned out to be. Thank you to all the people I've shared time with that made it epic! I look](https://pbs.twimg.com/profile_images/1521618938/Sove_Frede_200x200.jpg)
Frederik Nielsen on X: "My time as a professional tennis player is up. It's with disbelief I look back at my 20 years on tour. I'm leaving with pride and happiness over what turned out to be. Thank you to all the people I've shared time with that made it epic! I look
![Wimbledon 2012: GB's Jonathan Marray and Frederik Nielsen reach final | Wimbledon 2012 | The Guardian Wimbledon 2012: GB's Jonathan Marray and Frederik Nielsen reach final | Wimbledon 2012 | The Guardian](https://i.guim.co.uk/img/static/sys-images/Sport/Pix/columnists/2012/7/6/1341598179175/Jonathan-Marray-top-right-008.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctYWdlLTIwMTIucG5n&enable=upscale&s=beaab0ffbb659305d963f6c6b12204af)
Wimbledon 2012: GB's Jonathan Marray and Frederik Nielsen reach final | Wimbledon 2012 | The Guardian
![Tennis Player Frederik Nielsen in Action at a Davis Cup Match Editorial Photo - Image of international, mergea: 29021336 Tennis Player Frederik Nielsen in Action at a Davis Cup Match Editorial Photo - Image of international, mergea: 29021336](https://thumbs.dreamstime.com/z/tennis-player-frederik-nielsen-action-davis-cup-match-29021336.jpg)
Tennis Player Frederik Nielsen in Action at a Davis Cup Match Editorial Photo - Image of international, mergea: 29021336
![Danish team Rasmus Norby, left, and Frederik Nielsen, right, return the ball to Morocco's Mounir El Aarej, foreground, and Rabie Charki, unseen, during their Davis Cup Europe/Africa Zone play off tennis match Danish team Rasmus Norby, left, and Frederik Nielsen, right, return the ball to Morocco's Mounir El Aarej, foreground, and Rabie Charki, unseen, during their Davis Cup Europe/Africa Zone play off tennis match](https://c8.alamy.com/comp/2PBN6TP/danish-team-rasmus-norby-left-and-frederik-nielsen-right-return-the-ball-to-moroccos-mounir-el-aarej-foreground-and-rabie-charki-unseen-during-their-davis-cup-europeafrica-zone-play-off-tennis-match-in-rabat-morocco-saturday-april-7-2007-nielsen-and-norby-won-6-4-2-6-6-7-68-3-6-ap-photoabdeljalil-bounhar-2PBN6TP.jpg)
Danish team Rasmus Norby, left, and Frederik Nielsen, right, return the ball to Morocco's Mounir El Aarej, foreground, and Rabie Charki, unseen, during their Davis Cup Europe/Africa Zone play off tennis match
![Frederik Nielsen and Joe Salisbury (right) during the doubles on day five of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon Stock Photo - Alamy Frederik Nielsen and Joe Salisbury (right) during the doubles on day five of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon Stock Photo - Alamy](https://c8.alamy.com/comp/P7HPRB/frederik-nielsen-and-joe-salisbury-right-during-the-doubles-on-day-five-of-the-wimbledon-championships-at-the-all-england-lawn-tennis-and-croquet-club-wimbledon-P7HPRB.jpg)
Frederik Nielsen and Joe Salisbury (right) during the doubles on day five of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon Stock Photo - Alamy
![Joe Salisbury (left) and Frederik Nielsen during their doubles match on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon Stock Photo - Alamy Joe Salisbury (left) and Frederik Nielsen during their doubles match on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon Stock Photo - Alamy](https://l450v.alamy.com/450v/p7drfk/joe-salisbury-left-and-frederik-nielsen-during-their-doubles-match-on-day-four-of-the-wimbledon-championships-at-the-all-england-lawn-tennis-and-croquet-club-wimbledon-p7drfk.jpg)
Joe Salisbury (left) and Frederik Nielsen during their doubles match on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon Stock Photo - Alamy
![Frederik Nielsen (Denmark) servint at the Aegon Tennis Championship, Queens Club, London. 12th June 2013 Stock Photo - Alamy Frederik Nielsen (Denmark) servint at the Aegon Tennis Championship, Queens Club, London. 12th June 2013 Stock Photo - Alamy](https://c8.alamy.com/comp/D96H88/frederik-nielsen-denmark-servint-at-the-aegon-tennis-championship-D96H88.jpg)
Frederik Nielsen (Denmark) servint at the Aegon Tennis Championship, Queens Club, London. 12th June 2013 Stock Photo - Alamy
![Frederik Nielsen (Denmark) in a doubles match with Grigor Dimitrov at the Aegon Tennis Championship, Queens Club, London. 12th June 2013 Stock Photo - Alamy Frederik Nielsen (Denmark) in a doubles match with Grigor Dimitrov at the Aegon Tennis Championship, Queens Club, London. 12th June 2013 Stock Photo - Alamy](https://c8.alamy.com/comp/D96H8D/frederik-nielsen-denmark-in-a-doubles-match-with-grigor-dimitrov-at-D96H8D.jpg)