Page 6 de l'historique des matchs du joueur de tennis: Retrouvez ici la totalité des matchs et tournois joués par Jan Kumstat.
123 matchs enregistrés.
| 04/03/2025 | M25 Trimbach | Dominic Stricker vs. Jan Kumstat |
| 13/02/2025 | M15 Sharm ElSheikh | Jan Kumstat vs. Federico Bondioli |
| 12/02/2025 | M15 Sharm ElSheikh | Niklas Waldner vs. Jan Kumstat |
| 05/02/2025 | M15 Sharm ElSheikh | Jan Kumstat vs. Evgeny Philippov |
| 23/01/2025 | Australian Open (juniors) | Jan Kumstat vs. Henry Bernet |
| 22/01/2025 | Australian Open (juniors) | Jan Kumstat vs. Moise Kouame |
| 20/01/2025 | Australian Open (juniors) | Jan Kumstat vs. Cruz Hewitt |
| 18/01/2025 | Australian Open (juniors) | Jan Kumstat vs. Maximus Dussault |
| 29/07/2024 | Liberec Challenger | Jerome Kym vs. Jan Kumstat |
| 10/07/2024 | Wimbledon (juniors) | Jagger Leach vs. Jan Kumstat |
| 08/07/2024 | Wimbledon (juniors) | Alexander Vasilev vs. Jan Kumstat |
| 06/05/2024 | Prague Challenger | Jaime Faria vs. Jan Kumstat |
| 22/04/2024 | Ostrava Challenger | Timofey Skatov vs. Jan Kumstat |
| 28/03/2024 | M25 Trnava | Mirza Basic vs. Jan Kumstat |
| 27/03/2024 | M25 Trnava | Jan Kumstat vs. Saba Purtseladze |
| 26/03/2024 | M25 Trnava | Michael Gloeckler vs. Jan Kumstat |
| 25/03/2024 | M25 Trnava | Jan Kumstat vs. Jan Jermar |
| 21/01/2024 | Australian Open (juniors) | Jan Kumstat vs. Charlie Robertson |
| 20/01/2024 | Australian Open (juniors) | Tianhui Zhang vs. Jan Kumstat |
| 04/06/2023 | Prostejov Challenger | Mate Valkusz vs. Jan Kumstat |