Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Ireland
17.04.84, 40 years
180 cm
70 kg
Left-handed
32.553 $
17.04.84, 40 years
180 cm
70 kg
Left-handed
32.553 $
Stefan Seifert vs. Colin O'Brien - H2H matches
21.10.13 | 1st round | Stefan Seifert | Colin O'Brien | 6-4, 7-5 | match details | Germany F20 | Carpet |
Stefan Seifert form & Colin O'Brien form
Stefan Seifert - last matches
All Lower - Clay | ||||
27.06.20 1st round | vs. Kai Wehnelt | 2-5, - Stefan Seifert - retired | match details | |
26.06.20 1st round | vs. Tom Schonenberg | 4-6, 2-6 | match details | |
25.06.20 1st round | vs. Kai Wehnelt | 4-6, 2-6 | match details | |
24.06.20 1st round | vs. Marvin Moeller | 6-4, 3-6, 5-7 | match details | |
M15 Oberhaching - I. hard | ||||
20.02.20 2nd round | vs. Jakub Paul | 4-6, 7-64, 4-6 | match details | |
18.02.20 1st round | vs. Maximilian Neuchrist | 7-66, 4-2, Maximilian Neuchrist - retired | match details | |
M15 Heraklion - Hard | ||||
13.02.20 2nd round | vs. Antonio Massara | 3-6, 5-7 | match details | |
11.02.20 1st round | vs. Ioannis Stamoulos | 6-0, 2-6, 6-3 | match details | |
M15 Veigy - Carpet | ||||
30.01.20 2nd round | vs. Quentin Robert (1994) | 6-73, 6-4, 3-6 | match details | |
29.01.20 1st round | vs. Jurgen Briand | 7-62, 6-1 | match details | |
27.01.20 qual. | vs. Glenn Smits | 6-4, 6-1 | match details | |
M25 Nussloch - Carpet | ||||
24.01.20 1/4 | vs. Jonas Forejtek | 6-1, 6-72, 3-6 | match details | |
23.01.20 2nd round | vs. Alexander Erler | 6-4, 6-3 | match details | |
22.01.20 1st round | vs. Evan Hoyt | 7-5, 6-3 | match details | |
21.01.20 qual. | vs. Lasse Muscheites | 6-4, 6-3 | match details | |
20.01.20 q 2 | vs. Niklas Albuszies | 6-0, 6-2 | match details | |
19.01.20 q 1 | vs. Paul-Georg Guenther | 6-3, 6-1 | match details | |
M15 Sharm - Hard | ||||
21.11.19 2nd round | vs. Vladyslav Manafov | 2-6, 4-6 | match details | |
20.11.19 1st round | vs. Filip Duda | 6-4, 6-1 | match details | |
M15 Sharm - Hard | ||||
13.11.19 1st round | vs. Laurynas Grigelis | 2-4, - Stefan Seifert - retired | match details | |
M15 Parnu - I. hard | ||||
02.11.19 1/2 | vs. Evgenii Tiurnev | 5-7, 7-5, 3-6 | match details | |
01.11.19 1/4 | vs. Maxime Pauwels | 4-6, 6-2, 6-2 | match details | |
31.10.19 2nd round | vs. Baptiste Crepatte | 7-5, 1-0, Baptiste Crepatte - retired | match details | |
30.10.19 1st round | vs. Kristjan Tamm | 6-3, 3-6, 6-4 | match details | |
M15 Liberec - Carpet | ||||
24.10.19 2nd round | vs. Uladzimir Ignatik | 4-6, 6-71 | match details | |
22.10.19 1st round | vs. Karlo Cubelic | 6-3, 6-2 | match details | |
M15 Bad - Carpet | ||||
13.10.19 fin | vs. Jan Choinski | 3-6, 1-6 | match details | |
12.10.19 1/2 | vs. Justin Eleveld | 6-3, 7-67 | match details | |
11.10.19 1/4 | vs. Marc-Andrea Huesler | 6-2, 6-3 | match details | |
10.10.19 2nd round | vs. Daniel Altmaier | 6-4, 7-5 | match details |
Colin O'Brien - last matches
Germany F20 - Carpet | ||||
21.10.13 1st round | vs. Stefan Seifert | 4-6, 5-7 | match details | |
France F16 - I. hard | ||||
16.09.13 1st round | vs. Michael Lammer | 4-6, 0-6 | match details | |
Petange Challenger - I. hard | ||||
07.09.13 q 1 | vs. Louk Sorensen | 6-3, 3-6, 2-6 | match details | |
St. Remy - Hard | ||||
01.09.13 q 2 | vs. Yannick Jankovits | 6-4, 6-71, 5-7 | match details | |
01.09.13 q 1 | vs. Clement Maas | 6-4, 6-4 | match details | |
Ireland F1 - Carpet | ||||
22.07.13 1st round | vs. Luca Serena | 6-3, 5-7, 6-3 | match details | |
22.07.13 2nd round | vs. Tom Farquharson | 0-6, 6-4, 2-6 | match details | |
22.07.13 1st round | vs. Luca Serena | 6-3, 5-7, 6-3 | match details | |
22.07.13 2nd round | vs. Tom Farquharson | 0-6, 6-4, 2-6 | match details | |
Davis Cup - I. hard | ||||
07.04.13 | vs. Harri Heliovaara | Harri Heliovaara - walk over | match details | |
07.04.13 | vs. Harri Heliovaara | Harri Heliovaara - walk over | match details | |
05.04.13 | vs. Jarkko Nieminen | 1-6, 2-6, 0-6 | match details | |
05.04.13 | vs. Jarkko Nieminen | 1-6, 2-6, 0-6 | match details | |
Portugal F4 - Hard | ||||
11.03.13 1st round | vs. Enrique Lopez-Perez | 7-5, 6-3 | match details | |
11.03.13 2nd round | vs. Cristian Rodriguez | 6-4, 4-0, Cristian Rodriguez - retired | match details | |
11.03.13 1/2 | vs. Leonardo Tavares | 2-6, 2-6 | match details | |
11.03.13 1/4 | vs. Joao Domingues | 7-65, 0-6, 7-5 | match details | |
Portugal F3 - Hard | ||||
04.03.13 1st round | vs. Harri Heliovaara | 6-4, 6-1 | match details | |
04.03.13 2nd round | vs. Rui Machado | 3-6, 0-6 | match details | |
Portugal F2 - Hard | ||||
25.02.13 2nd round | vs. Tristan Lamasine | 0-6, 1-6 | match details | |
25.02.13 1st round | vs. Fabricio Neis | 6-3, 1-6, 6-2 | match details | |
Heilbronn Challenger - I. hard | ||||
24.01.11 q 1 | vs. Dieter Kindlmann | 2-6, 3-6 | match details | |
Great Britain - I. hard | ||||
17.01.11 1st round | vs. Richard Bloomfield | 6-3, 6-2 | match details | |
17.01.11 2nd round | vs. Liam Broady | 7-5, 4-6, 2-6 | match details | |
Czech Republic - Carpet | ||||
22.11.10 1/4 | vs. Jan Mertl | 6-75, 5-7 | match details | |
22.11.10 1st round | vs. Jakub Lustyk | 7-62, 6-2 | match details | |
22.11.10 2nd round | vs. Alexander Bury | 7-63, 1-6, 6-2 | match details | |
Czech Republic - Carpet | ||||
15.11.10 1st round | vs. Dawid Celt | 7-65, 7-66 | match details | |
15.11.10 2nd round | vs. Denis Matsukevitch | 1-6, 4-6 | match details | |
Greece F4 - Hard | ||||
01.11.10 1st round | vs. Sam Barry | 6-3, 6-72, 6-1 | match details |