Jan Kumstat v Rei Sakamoto | Australian Open 2024 Junior Boys Final
Jan Kumstat - Ziga Svec (R1)
Jan Kumstat - Filip Hanzelin (QF)
ITF M25 Trimbach (Mar 3) 2025 R1: Dominic Stricker [1] vs. Jan Kumstat Highlights
Petr Brunclik - Jan Kumstat (SF)
Jan Kumstát: Byla to dobrá zkušenost. Soupeř zvládl zápas líp | Advantage Cars Prague Open 2025
Junior Boys' Singles Ceremony | Jan Kumstat v Rei Sakamoto | Australian Open 2024 Final
Milic/Pleshivtsev v Exsted/Kumstat Highlights | Australian Open 2025 Final
#超速報【世界スーパージュニア2024/2R】Jan Kumstat(CZE) vs 川西飛生(JPN) 大阪市長杯2024世界スーパージュニアテニス
Jan Kumstat - Paolo Angeli (QF)
FRECHET Axel (FRA) VS KUMSTAT Jan (CZE) - Open Super 12 Auray 2019
BERQUIER Alexis (FRA) VS KUMSTAT Jan (CZE) - Open Super 12 Auray 2019
Jan Kumstat - Oskar Grzegorzewski (R2)
Jan Kumstat - Salidin Rama (R1)
Jan Kumstát (CZE) gold medal ceremony, tenis, EYOF Banská Bystrica
Junior Boys' Doubles Trophy Ceremony | Exsted/Kumstat | Australian Open 2025
Jan Kumstat - Sergio Planella Hernandez (F)
Jan Kumstát vs. Maxim Mrva - 4.2.2019 - finále dvouhry - HMČR Jablonec - ml.žáci
Jan Kumstat - Julius Aleksandrovas (R2)
KUMSTAT Jan (CZE) VS WITZ Antonin (FRA) - Auray 2
![ITF M25 Trimbach (Mar 3) 2025 R1: Dominic Stricker [1] vs. Jan Kumstat Highlights](https://img.youtube.com/vi/kMzScrv0r38/0.jpg)
