ATP 679
| Best 2026: | 603 |
| Best 2025: | 670 |
| Best | 603 |
Jan Kumstat |
| Negara | Czech Republic |
| Age | 19 yo / 196 cm / 83 kg |
| Forehand | Galle (Tangan pindho) |
| Birthplace/Residence | Prostejov |
| Pangentukan | 26,011$ |
All
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
Performances
2024 Final, Melbourne 2025 1/2 Final, Pardubice 2025 1/4 Final, Melbourne 2026 1/4 Final, Pszczyna 2025 Babak 3rd, New York 2025 2 babak, Ostrava 2025 2 babak, Monastir 2025 2 babak, Ceska Lipa 2024 2 babak, Trnava 2025 2 babak, Wimbledon Junior 2024 2 babak, Wimbledon Junior 
