Historique des matchs du joueur de tennis: Retrouvez ici la totalité des matchs et tournois joués par Jan Kumstat.
123 matchs enregistrés.
| 02/11/2026 | Taipei Challenger | Joel Schwaerzler vs. Jan Kumstat |
| 27/10/2026 | Seoul Challenger | Sho Shimabukuro vs. Jan Kumstat |
| 18/10/2026 | Grand Prix Auvergne-Rhone-Alpes - Lyon | Jan Kumstat vs. Michael Mmoh |
| 15/10/2026 | Olbia Challenger | Jacob Fearnley vs. Jan Kumstat |
| 13/10/2026 | Olbia Challenger | Jan Kumstat vs. Edas Butvilas |
| 31/08/2026 | Como Challenger | Juan Pablo Varillas vs. Jan Kumstat |
| 22/08/2026 | Prague Challenger | Chun Hsin Tseng vs. Jan Kumstat |
| 21/08/2026 | Prague Challenger | Jan Kumstat vs. Filip Cristian Jianu |
| 20/08/2026 | Prague Challenger | Maxim Mrva vs. Jan Kumstat |
| 19/08/2026 | Prague Challenger | Jan Kumstat vs. Sumit Nagal |
| 18/08/2026 | Prague Challenger | Petr Brunclik vs. Jan Kumstat |
| 16/08/2026 | Hamburg Challenger | Jan Kumstat vs. Marvin Moeller |
| 15/08/2026 | Hamburg Challenger | Matheus Pucinelli De Almeida vs. Jan Kumstat |
| 14/08/2026 | Hamburg Challenger | Carlos Taberner vs. Jan Kumstat |
| 13/08/2026 | Hamburg Challenger | Jan Kumstat vs. Max Houkes |
| 11/08/2026 | Hamburg Challenger | Jamie Mackenzie vs. Jan Kumstat |
| 10/08/2026 | Hamburg Challenger | Jan Kumstat vs. Tom Zeuch |
| 09/08/2026 | Hamburg Challenger | Jan Kumstat vs. Alan Wazny |
| 02/08/2026 | Liberec Challenger | Jan Kumstat vs. Gonzalo Bueno |
| 01/08/2026 | Liberec Challenger | Jan Kumstat vs. Sumit Nagal |