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 / surface: Grass
Frederik Nielsen / surface: Grass
| 12.06.18 | 1st round | Adrian Menendez-Maceiras | Frederik Nielsen | 6-4, 7-68 |  | match details |  Nottingham Challenger | Grass |
| 11.06.18 | qual. | Frederik Nielsen | Dominik Koepfer | 1-6, 6-4, 6-1 |  | match details | ||
| 10.06.18 | q 2 | Frederik Nielsen | Austin Krajicek | 6-3, 7-61 | | match details | ||
| 09.06.18 | q 1 | Frederik Nielsen | Daniil Zarichanskyy | 6-3, 6-1 | | match details | ||
| 29.05.16 | q 2 | Marinko Matosevic | Frederik Nielsen | 6-4, 6-4 | | match details | Manchester Challenger | Grass |
| 29.05.16 | q 1 | Frederik Nielsen | Max Benaim | 6-1, 6-3 | | match details | ||
| 11.07.15 | q 1 | Adrien Bossel | Frederik Nielsen | 6-1, 6-3 | | match details |  Newport | Grass |
| 20.06.15 | q 1 | Lukas Lacko | Frederik Nielsen | 6-4, 6-3 | | match details | Nottingham | Grass |
| 13.06.15 | q 1 | Jordan Thompson | Frederik Nielsen | 7-61, 6-73, 6-3 | | match details | Ilkley Challenger | Grass |
| 10.06.15 | 2nd round | Brydan Klein | Frederik Nielsen | 7-65, 7-63 | | match details | Surbiton Challenger | Grass |
| 08.06.15 | 1st round | Frederik Nielsen | Jarmere Jenkins | 6-2, 6-1 | | match details | ||
| 07.06.15 | qual. | Frederik Nielsen | Stefan Kozlov | 6-2, 4-6, 6-3 | | match details | ||
| 06.06.15 | q 1 | Frederik Nielsen | Pavlo Zhukov | 7-5, 6-1 | | match details | ||
| 06.06.15 | q 2 | Frederik Nielsen | Joe Salisbury | 6-4, 6-3 | | match details | ||
| 04.06.15 | 2nd round | Rajeev Ram | Frederik Nielsen | 6-2, 7-66 | | match details | Manchester Challenger | Grass |
| 03.06.15 | 1st round | Frederik Nielsen | Ryan Harrison | 6-1, 5-7, 6-2 | | match details | ||
| 01.06.15 | q 2 | Frederik Nielsen | Cameron Norrie | 6-4, 7-5 | | match details | ||
| 01.06.15 | qual. | Frederik Nielsen | Michael Venus | 3-6, 6-4, 6-3 | | match details | ||
| 05.07.14 | q 2 | Ante Pavic | Frederik Nielsen | 6-3, 6-2 | | match details | Newport | Grass |
| 15.06.13 | q 1 | Frederik Nielsen | Daniel Smethurst | 6-0, 6-1 | | match details | Eastbourne | Grass |
| 15.06.13 | q 2 | Kenny de Schepper | Frederik Nielsen | 6-4, 6-4 | | match details | ||
| 10.06.13 | 1st round | Marinko Matosevic | Frederik Nielsen | 7-5, 6-2 | | match details | London | Grass |
| 09.06.13 | qual. | Feliciano Lopez | Frederik Nielsen | 4-6, 6-3, 6-4 | | match details | ||
| 08.06.13 | q 2 | Frederik Nielsen | James Mcgee | 6-4, 4-6, 6-1 | | match details | ||
| 08.06.13 | q 1 | Frederik Nielsen | Fabrice Martin | 6-4, 6-1 | | match details | ||
| 16.06.12 | q 1 | Paul-Henri Mathieu | Frederik Nielsen | 6-2, 6-73, 6-4 | | match details | Eastbourne | Grass |
| 10.06.12 | q 2 | Stephane Bohli | Frederik Nielsen | 6-3, 7-66 | | match details | Nottingham 2 | Grass |
| 09.06.12 | q 1 | Frederik Nielsen | Miles Bugby | 5-7, 7-5, 6-2 | | match details | ||
| 08.06.12 | 2nd round | Igor Kunitsyn | Frederik Nielsen | 6-1, 3-6, 7-61 | | match details | Nottingham Challenger | Grass |
| 06.06.12 | 1st round | Frederik Nielsen | Andrew Fitzpatrick | 6-1, 6-1 | | match details | ||
| 04.06.12 | q 2 | Frederik Nielsen | Divij Sharan | 6-2, 6-2 | | match details | ||
| 04.06.12 | qual. | Frederik Nielsen | Pierre-Hugues Herbert | 3-6, 6-4, 6-3 | | match details | ||
| 03.06.12 | q 1 | Frederik Nielsen | Alexander Ward | 7-63, 6-4 | | match details | ||
| 14.06.11 | q 2 | Karol Beck | Frederik Nielsen | 7-60, 6-2 | | match details | London | Grass |
| 13.06.11 | q 1 | Frederik Nielsen | Peter Luczak | 7-68, 6-3 | | match details | ||
| 09.06.11 | 2nd round | Rik de Voest | Frederik Nielsen | 6-2, 6-4 | | match details | Nottingham Challenger | Grass |
| 07.06.11 | 1st round | Frederik Nielsen | Alexander Kudryavtsev | 6-3, 7-65 | | match details | ||
| 06.06.11 | q 2 | Frederik Nielsen | David Martin | 6-3, 6-1 | | match details | ||
| 06.06.11 | qual. | Frederik Nielsen | Rudy Coco | 6-1, 7-62 | | match details | ||
| 06.06.11 | q 1 | Frederik Nielsen | Joe Salisbury | 6-1, 3-6, 7-5 | | match details | ||
| 16.07.09 | 2nd round | Olivier Rochus | Frederik Nielsen | 6-3, 6-3 | | match details | Manchester Challenger | Grass |
| 14.07.09 | 1st round | Frederik Nielsen | George Bastl | 7-5, 2-6, 6-2 | | match details | ||
| 16.06.09 | q 1 | Danai Udomchoke | Frederik Nielsen | 6-4, 6-4 | | match details | London | Grass |
| 17.06.08 | 1st round | Eduardo Schwank | Frederik Nielsen | 6-3, 6-3 | | match details | Nottingham | Grass |
| 15.06.08 | qual. | Samuel Groth | Frederik Nielsen | 7-64, 6-4 | | match details | ||
| 14.06.08 | q 1 | Frederik Nielsen | Nicholas Monroe | 4-6, 6-4, 6-0 | | match details | ||
| 14.06.08 | q 2 | Frederik Nielsen | Martin Fischer | 6-72, 6-3, 7-64 | | match details | ||
| 02.06.08 | q 2 | Frank Dancevic | Frederik Nielsen | 7-5, 6-2 | | match details | Surbiton | Grass |
| 02.06.08 | q 1 | Frederik Nielsen | Sean Thornley | 3-6, 6-4, 6-1 | | match details | ||
| 21.06.07 | qual. | Tomas Zib | Frederik Nielsen | 3-6, 3-6, 6-4, 6-3, 6-2 | | match details | London | Grass |
| 20.06.07 | q 2 | Frederik Nielsen | Thierry Ascione | 6-4, 7-5 | | match details | ||
| 18.06.07 | q 1 | Frederik Nielsen | Nicolas Tourte | 7-66, 6-0 | | match details | ||
| 17.06.07 | q 2 | Jan Vacek | Frederik Nielsen | 6-4, 6-2 | | match details | Nottingham | Grass |
| 16.06.07 | q 1 | Frederik Nielsen | Lewis Barnes | 6-1, 6-1 | | match details | ||
| 12.06.07 | 1st round | Alex Kuznetsov | Frederik Nielsen | 7-5, 6-3 | | match details | London | Grass |
| 10.06.07 | qual. | Frederik Nielsen | Marcelo Melo | 6-76, 7-66, 6-0 | | match details | ||
| 09.06.07 | q 1 | Frederik Nielsen | Iain Atkinson | 6-2, 6-0 | | match details | ||
| 09.06.07 | q 2 | Frederik Nielsen | Nathan Healey | 6-3, 6-3 | | match details | ||
| 20.07.06 | 2nd round | Antony Dupuis | Frederik Nielsen | 7-64, 6-3 | | match details | Manchester | Grass |
| 19.07.06 | 1st round | Frederik Nielsen | Philipp Hammer | 6-3, 6-3 | | match details | ||
| 10.07.06 | 2nd round | Frederik Nielsen | Daniel King-Turner | 6-4, 6-2 | | match details | Great Britain | Grass |
| 10.07.06 | 1st round | Frederik Nielsen | Ian Flanagan | 4-2, Ian Flanagan - retired | | match details | ||
| 10.07.06 | 1/4 | Colin Fleming | Frederik Nielsen | 6-2, 7-68 | | match details | ||
| 05.06.06 | q 1 | Lee Childs | Frederik Nielsen | 6-3, 6-0 | | match details | Surbiton | Grass |
| 21.11.05 | 1st round | Frederik Nielsen | Patrick Jozwik | 6-2, 6-4 | | match details |  Australia F11 | Grass |
| 21.11.05 | 2nd round | Frederik Nielsen | Timo Nieminen | 1-6, 6-1, 6-1 | | match details | ||
| 21.11.05 | 1/4 | Luke Bourgeois | Frederik Nielsen | 6-4, 6-4 | | match details | ||
| 14.11.05 | 1st round | Frederik Nielsen | Colin Ebelthite | 6-4, 6-2 | | match details | Australia F10 | Grass |
| 14.11.05 | 2nd round | Callum Beale | Frederik Nielsen | 6-4, 6-3 | | match details | ||
| 11.07.05 | q 1 | Frederik Nielsen | Joseph Dewhurst | 6-4, 6-2 | | match details | Manchester | Grass |
| 11.07.05 | q 2 | Jean-Francois Bachelot | Frederik Nielsen | 6-4, 6-2 | | match details | ||
| 04.07.05 | qual. | Jean-Francois Bachelot | Frederik Nielsen | 7-5, 7-5 | | match details | Nottingham | Grass |
| 04.07.05 | q 1 | Frederik Nielsen | Kyle Collins | 6-0, 6-0 | | match details | ||
| 04.07.05 | q 2 | Frederik Nielsen | Ross Connolly | 6-3, 6-3 | | match details | ||
| 11.06.05 | q 2 | Jean-Francois Bachelot | Frederik Nielsen | 6-4, 6-4 | | match details |  's-Hertogenbosch | Grass |
| 11.06.05 | q 1 | Frederik Nielsen | Diego Hartfield | 4-6, 6-4, 6-4 | | match details | ||
| 30.05.05 | q 1 | Frederik Nielsen | Horia Tecau | 6-74, 6-4, 6-3 | | match details | Surbiton | Grass |
| 30.05.05 | q 2 | Frederik Nielsen | Matthew Smith | 6-2, 6-2 | | match details | ||
| 30.05.05 | qual. | Harsh Mankad | Frederik Nielsen | 6-1, 7-67 | | match details | ||
| 23.05.05 | 1st round | Harsh Mankad | Frederik Nielsen | 7-5, 6-4 | | match details | Great Britain | Grass |