Name: Marek Semjan
Country: Slovakia
Birthdate: 07.11.87, 36 years
ATP ranking: 796
TOP ranking's position: 218 (30.08.10, 218 points)
Points: 25
Prize money: 196841 $
Matches total: 825
Win: 449
%: 54.42 %
Country: Slovakia
Birthdate: 07.11.87, 36 years
ATP ranking: 796
TOP ranking's position: 218 (30.08.10, 218 points)
Points: 25
Prize money: 196841 $
Matches total: 825
Win: 449
%: 54.42 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2021 | 1/2 | 0/0 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 0/1 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2019 | 18/16 | 10/4 | 8/12 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 32/21 | 3/3 | 22/12 | 4/4 | 3/2 | 0/0 | 0/0 |
| 2017 | 29/20 | 8/5 | 14/10 | 5/4 | 2/1 | 0/0 | 0/0 |
| 2016 | 27/20 | 13/6 | 12/11 | 2/2 | 0/1 | 0/0 | 0/0 |
| 2015 | 9/18 | 1/2 | 6/15 | 0/0 | 2/1 | 0/0 | 0/0 |
| 2014 | 40/28 | 8/6 | 27/18 | 5/4 | 0/0 | 0/0 | 0/0 |
| 2013 | 49/26 | 25/7 | 13/13 | 11/4 | 0/1 | 0/1 | 0/0 |
| 2012 | 35/26 | 12/12 | 21/12 | 1/1 | 1/1 | 0/0 | 0/0 |
| 2011 | 7/26 | 2/7 | 1/11 | 4/6 | 0/1 | 0/1 | 0/0 |
| 2010 | 38/29 | 11/10 | 19/12 | 8/6 | 0/1 | 0/0 | 0/0 |
| 2009 | 43/35 | 9/8 | 19/15 | 13/11 | 2/1 | 0/0 | 0/0 |
| 2008 | 38/36 | 4/6 | 32/23 | 2/3 | 0/4 | 0/0 | 0/0 |
| 2007 | 45/39 | 2/2 | 40/30 | 2/4 | 1/3 | 0/0 | 0/0 |
| 2006 | 34/25 | 3/4 | 29/20 | 2/1 | 0/0 | 0/0 | 0/0 |
| 2005 | 4/8 | 0/0 | 4/7 | 0/1 | 0/0 | 0/0 | 0/0 |
| TOTAL | 449/376 | 111/82 | 268/223 | 59/52 | 11/17 | 0/2 | 0/0 |
| perc. % | 54.42 % | 57.51 % | 54.58 % | 53.15 % | 39.29 % | 0 % | 0 % |
Marek Semjan / scheduled / last
| no matches found |
Marek Semjan form / year 2009 / surface: Hard
Marek Semjan / year 2009 / surface: Hard
| 24.08.09 | 1st round | Guillermo Alcaide | Marek Semjan | 6-4, 6-75, 7-62 |  | match details |  Almaty Challenger | Hard |
| 20.08.09 | 2nd round | Ivan Sergeyev | Marek Semjan | 7-60, 6-3 | | match details |  Karshi Challenger | Hard |
| 18.08.09 | 1st round | Marek Semjan | Guillermo Alcaide | 7-64, 7-62 |  | match details | ||
| 13.07.09 | 1/4 | Sadik Kadir | Marek Semjan | 6-2, 6-1 | | match details |  Syria F2 | Hard |
| 13.07.09 | 1st round | Marek Semjan | Mohamed Safwat | 6-2, 6-1 | | match details | ||
| 13.07.09 | 2nd round | Marek Semjan | Kirati Siributwong | 6-1, 4-6, 6-3 | | match details | ||
| 06.07.09 | 1st round | Marek Semjan | Majdi Salim | 6-2, 2-1, Majdi Salim - retired | | match details | Syria F1 | Hard |
| 06.07.09 | 2nd round | Alexandre Penaud | Marek Semjan | 4-6, 7-5, 7-5 | | match details | ||
| 19.05.09 | 1st round | Lukas Lacko | Marek Semjan | 4-6, 6-1, 7-5 | | match details | Fergana Challenger | Hard |
| 12.05.09 | 1st round | Aisam Qureshi | Marek Semjan | 6-3, 6-4 | | match details |  Busan Challenger | Hard |
| 09.02.09 | 1/4 | Marek Semjan | Philippe De Bonnevie | 6-2, 6-2 | | match details |  Ivory Coast | Hard |
| 09.02.09 | 1st round | Marek Semjan | Sylvain Anibie | 6-2, 6-3 | | match details | ||
| 09.02.09 | 2nd round | Marek Semjan | Divij Sharan | 7-64, 7-64 | | match details | ||
| 09.02.09 | 1/2 | Andreas Haider-Maurer | Marek Semjan | 6-3, 4-6, 7-5 | | match details | ||
| 02.02.09 | 2nd round | Marek Semjan | Ken Skupski | 6-2, 6-1 | | match details | Ivory Coast | Hard |
| 02.02.09 | 1/4 | Andreas Haider-Maurer | Marek Semjan | 6-2, 6-3 | | match details | ||
| 02.02.09 | 1st round | Marek Semjan | Evgeny Donskoy | 7-63, 6-1 | | match details |