Sebastian Fanselow (#no-rank)
| atpworldtour.com | ATP | Country |  Germany |
| Wikipedia | Eng / Fr | Birth | - |
| Career best ranking | 273 - 2022-08-08 | Résidence |  Unknown |
| Height | - | ||
| Weight | - |
| Conditions | W | D | ratio |
|---|---|---|---|
| Clay | 2 | 4 | 33.33% |
| Hard (in.) | 3 | 3 | 50.00% |
| TOTAL | 5 | 7 | 41.67% |
| # | Date | Categ | Tournament | Conditions | Round | #Rank | Opponent | Score | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2024-05-20 | 250 |  Grand Prix de tennis de Lyon | Clay | 16e | #10000 |  #80 Yoshihito Nishioka | 6/0 6/1 | |
| 2 | 2024-01-29 | Challenger |  Cleveland Open | Hard (in.) | 8e | #324 | #266 Tennys Sandgren | 6/0 7/6(4) | |
| 3 | 2024-01-29 | Challenger | Cleveland Open | Hard (in.) | 16e | #324 | #836 William Grant | 7/6(3) 6/1 | |
| 4 | 2022-06-20 | Challenger |  Oeiras 3 Challenger | Clay | 16e | #312 |  #331 Steven Diez | 2/6 6/1 6/4 | |
| 5 | 2021-11-15 | Finals | LLTL Finals Pau | Hard (in.) | 8e | #402 |  #109 Holger Vitus Nodskov Rune | 6/2 6/2 | |
| 6 | 2021-11-15 | Finals | LLTL Finals Pau | Hard (in.) | 16e | #402 | #346 Hiroki Moriya | 7/6(5) 6/4 | |
| 7 | 2019-08-19 | Challenger |  L'Aquila Challenger | Clay | 32e | #329 | #311 Peter Torebko | 7/5 6/3 | |
| 8 | 2019-06-24 | Challenger | Milan Challenger | Clay | 8e | #320 |  #343 Aslan Karatsev | 6/4 6/2 | |
| 9 | 2019-06-24 | Challenger | Milan Challenger | Clay | 16e | #320 | #96 Paolo Lorenzi | 6/4 7/5 | |
| 10 | 2019-06-24 | Challenger | Milan Challenger | Clay | 32e | #320 | #528 Christopher Heyman | 7/5 7/6(1) | |
| 11 | 2018-11-12 | Finals |  LLTL Finals - CH125 Bengaluru | Hard (in.) | 8e | #431 | #141 Prajnesh Gunneswaran | 4/6 6/4 7/5 | |
| 12 | 2018-11-12 | Finals | LLTL Finals - CH125 Bengaluru | Hard (in.) | 16e | #431 |  #391 Zsombor Piros | 7/6(3) 6/4 |
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