Name: Frederik Nielsen
Country: Denmark
Birthdate: 27.08.83, 40 years
Height: 190 cm
Weight: 76 kg
Profi since: 2001
Right-handed
ATP ranking: 616
TOP ranking's position: 190 (15.08.11, 274 points)
Points: 3
Prize money: 1368011 $
Matches total: 929
Win: 564
%: 60.71 %
Country: Denmark
Birthdate: 27.08.83, 40 years
Height: 190 cm
Weight: 76 kg
Profi since: 2001
Right-handed
ATP ranking: 616
TOP ranking's position: 190 (15.08.11, 274 points)
Points: 3
Prize money: 1368011 $
Matches total: 929
Win: 564
%: 60.71 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2021 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 3/1 | 0/0 | 2/0 | 1/1 | 0/0 | 0/0 | 0/0 |
| 2019 | 1/2 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 29/19 | 14/11 | 0/0 | 12/7 | 0/0 | 3/1 | 0/0 |
| 2017 | 40/24 | 26/16 | 0/0 | 12/8 | 2/0 | 0/0 | 0/0 |
| 2016 | 47/21 | 29/14 | 0/0 | 14/4 | 3/2 | 1/1 | 0/0 |
| 2015 | 31/29 | 17/13 | 0/0 | 7/10 | 0/1 | 7/5 | 0/0 |
| 2014 | 45/19 | 23/9 | 0/0 | 18/5 | 4/4 | 0/1 | 0/0 |
| 2013 | 22/20 | 10/7 | 0/4 | 9/6 | 0/0 | 3/3 | 0/0 |
| 2012 | 20/20 | 13/9 | 0/1 | 1/6 | 1/1 | 5/3 | 0/0 |
| 2011 | 37/28 | 9/10 | 12/7 | 9/8 | 2/1 | 5/2 | 0/0 |
| 2010 | 46/26 | 14/10 | 18/10 | 8/3 | 6/3 | 0/0 | 0/0 |
| 2009 | 44/27 | 23/12 | 1/1 | 16/10 | 3/2 | 1/2 | 0/0 |
| 2008 | 37/26 | 12/6 | 2/5 | 12/8 | 8/4 | 3/3 | 0/0 |
| 2007 | 41/24 | 5/4 | 7/6 | 23/8 | 0/3 | 6/3 | 0/0 |
| 2006 | 48/26 | 10/5 | 7/2 | 18/10 | 6/5 | 3/3 | 4/1 |
| 2005 | 42/23 | 14/6 | 6/3 | 13/5 | 0/1 | 9/7 | 0/1 |
| 2004 | 29/24 | 2/3 | 7/7 | 13/8 | 7/6 | 0/0 | 0/0 |
| 2003 | 1/3 | 0/0 | 1/1 | 0/1 | 0/1 | 0/0 | 0/0 |
| 2002 | 1/1 | 0/0 | 0/0 | 1/1 | 0/0 | 0/0 | 0/0 |
| 2001 | 0/1 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| TOTAL | 564/365 | 222/138 | 63/47 | 187/110 | 42/34 | 46/34 | 4/2 |
| perc. % | 60.71 % | 61.67 % | 57.27 % | 62.96 % | 55.26 % | 57.5 % | 66.67 % |
Frederik Nielsen / scheduled / last
| no matches found |
Frederik Nielsen form / year 2015 / surface: Hard
Frederik Nielsen / year 2015 / surface: Hard
| 12.10.15 | 1st round | James Mcgee | Frederik Nielsen | 7-64, 6-3 |  | match details |  Fairfield Challenger | Hard |
| 06.10.15 | 1st round | Nicolas Meister | Frederik Nielsen | 6-1, 6-3 | | match details | Sacramento Challenger | Hard |
| 05.10.15 | qual. | Frederik Nielsen | Eric James Johnson | 3-6, 6-3, 6-2 |  | match details | ||
| 04.10.15 | q 2 | Frederik Nielsen | Reilly Opelka | 6-2, 6-4 | | match details | ||
| 29.09.15 | 1st round | Mackenzie Mcdonald | Frederik Nielsen | 6-4, 6-4 | | match details | Tiburon Challenger | Hard |
| 15.08.15 | q 1 | Radek Stepanek | Frederik Nielsen | 6-2, 6-3 | | match details |  Vancouver Challenger | Hard |
| 09.08.15 | q 2 | Deiton Baughman | Frederik Nielsen | 6-2, 6-1 | | match details | Aptos Challenger | Hard |
| 08.08.15 | q 1 | Frederik Nielsen | William Griffith | 7-5, 6-3 | | match details | ||
| 26.07.15 | q 2 | Noah Rubin | Frederik Nielsen | 6-4, 6-4 | | match details | Lexington Challenger | Hard |
| 24.07.15 | 1/4 | Brydan Klein | Frederik Nielsen | 2-6, 6-3, 6-4 | | match details | Binghamton Challenger | Hard |
| 22.07.15 | 2nd round | Frederik Nielsen | Matija Pecotic | 7-5, 6-4 | | match details | ||
| 21.07.15 | 1st round | Frederik Nielsen | Liam Broady | 6-1, 4-6, 6-2 | | match details | ||
| 14.05.15 | 2nd round | Hyeon Chung | Frederik Nielsen | 6-4, 6-1 | | match details |  Seoul Challenger | Hard |
| 12.05.15 | 1st round | Frederik Nielsen | Hiroki Moriya | 5-7, 7-64, 7-5 | | match details | ||
| 08.05.15 | 1/4 | Hyeon Chung | Frederik Nielsen | 6-0, 6-1 | | match details | Busan Challenger | Hard |
| 06.05.15 | 2nd round | Frederik Nielsen | Tatsuma Ito | 6-3, 7-64 | | match details | ||
| 05.05.15 | 1st round | Frederik Nielsen | Young Seok Kim | 6-4, 7-64 | | match details | ||
| 04.05.15 | qual. | Frederik Nielsen | Marcos Giron | 7-5, 4-6, 7-5 | | match details | ||
| 03.05.15 | q 2 | Frederik Nielsen | Yuuya Kibi | 6-1, 6-1 | | match details | ||
| 13.04.15 | 1st round | Joe Salisbury | Frederik Nielsen | 7-62, 6-4 | | match details |  Greece F4 | Hard |
| 29.01.15 | 2nd round | Bradley Klahn | Frederik Nielsen | 6-3, 6-4 | | match details | Maui Challenger | Hard |
| 27.01.15 | 1st round | Frederik Nielsen | Jason Jung | 2-6, 6-4, 6-1 | | match details | ||
| 12.01.15 | 1/2 | Frederik Nielsen | Alexander Sarkissian | 3-6, 6-4, 6-3 | | match details | USA F4 | Hard |
| 12.01.15 | 1st round | Frederik Nielsen | Martin Redlicki | 6-4, 6-4 | | match details | ||
| 12.01.15 | fin | Takanyi Garanganga | Frederik Nielsen | 6-75, 6-3, 6-4 | | match details | ||
| 12.01.15 | 2nd round | Frederik Nielsen | Mackenzie Mcdonald | 7-62, 6-4 | | match details | ||
| 12.01.15 | 1/4 | Frederik Nielsen | Stefan Kozlov | 7-65, 4-6, 6-0 | | match details | ||
| 05.01.15 | 1st round | Frederik Nielsen | Roberto Quiroz | 6-2, 7-5 | | match details | USA F2 | Hard |
| 05.01.15 | 2nd round | Frederik Nielsen | Eric Quigley | 6-2, 6-2 | | match details | ||
| 05.01.15 | 1/4 | Dimitar Kutrovsky | Frederik Nielsen | 6-4, 1-6, 6-2 | | match details |