Jan Kumstat (CZE)
Country: Czech Republic,
Born in 2007 (18 years old),
Category: ATP
ATP Ranking
670
41
Season High : 670
Career High : 670
ITF Ranking
49
1
Season High : 3
Career High : 3
| Tierlevel | Tourn. | Titles | Matches | Wins | Losses | PCT | 6-0 | 0-6 | 7-6 | 6-7 | Total | 24 | 0 | 52 | 28 | 24 | 0.538 | 1 | 0 | 12 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|
| Challenger 75 | 3 | 0 | 4 | 1 | 3 | 0.250 | 0 | 0 | 1 | 0 |
| Challenger 50 | 2 | 0 | 4 | 2 | 2 | 0.500 | 0 | 0 | 0 | 1 |
| M25 | 5 | 0 | 9 | 4 | 5 | 0.444 | 0 | 0 | 1 | 0 |
| M15 | 8 | 0 | 20 | 12 | 8 | 0.600 | 1 | 0 | 7 | 2 |
| JR Grand Slam Boys | 4 | 0 | 10 | 6 | 4 | 0.600 | 0 | 0 | 2 | 5 |
| J300 Boys | 2 | 0 | 5 | 3 | 2 | 0.600 | 0 | 0 | 1 | 0 |
Tournaments played in 2025
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