| Name | J. Jermar |
| Country | Czech Republic |
| DOB | 12.04.2000 |
| Season | Type | Rank | Titles | Won | Lost | Hard Won | Hard Lost | Clay Won | Clay Lost | Grass Won | Grass Lost |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | doubles | 1387 | 0 | 7 | 12 | 4 | 4 | 3 | 8 | ||
| 2022 | doubles | 745 | 1 | 13 | 18 | 4 | 6 | 9 | 12 | ||
| 2021 | doubles | 1052 | 0 | 9 | 11 | 2 | 3 | 7 | 8 | ||
| 2020 | doubles | 1680 | 0 | 2 | 3 | 2 | 2 | 0 | 1 | ||
| 2022 | singles | 0 | 0 | 5 | 0 | 1 | 0 | 4 | |||
| 2021 | singles | 0 | 0 | 2 | 0 | 1 | 0 | 1 | |||
| 2023 | singles | 0 | 0 | 5 | 0 | 5 | |||||
| 2024 | doubles | 407 | 5 | 33 | 13 | 23 | 7 | 10 | 6 | ||
| 2024 | singles | 1564 | 0 | 3 | 11 | 0 | 6 | 3 | 5 | ||
| 2025 | doubles | 242 | 3 | 26 | 28 | 11 | 12 | 15 | 16 | ||
| 2025 | singles | 2126 | 0 | 1 | 10 | 0 | 4 | 1 | 6 |
| Name | Season | Type | Surface | Prize |
|---|---|---|---|---|
| M15 Kottingbrunn (ITF) | 2024 | doubles | clay | $15,000 |
| M15 Casablanca 2 (ITF) | 2022 | doubles | clay | $15,000 |
| M15 Szabolcsveresmart (ITF) | 2024 | doubles | hard (indoor) | $15,000 |
| M15 Szabolcsveresmart 2 (ITF) | 2024 | doubles | hard (indoor) | $15,000 |
| M15 Madrid 3 (ITF) | 2024 | doubles | hard | $15,000 |
| M15 Alcala de Henares (ITF) | 2024 | doubles | hard | $15,000 |
| M25 Trento (ITF) | 2025 | doubles | hard (indoor) | $30,000 |
| M25 Saint-Dizier (ITF) | 2025 | doubles | hard (indoor) | $30,000 |
| Ostrava (Challenger) | 2025 | doubles | clay | €91,250 |
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