Live points verified daily against the official ranking: 998 of 1,000 in the ATP top 1,000 match to the point. How we check ›
Jan Kumstat, a 19-year-old Czech professional, holds the #507 spot in the live ATP rankings with 86 points. Kumstat moved up 2 places in the most recent release. Kumstat is a right-hander with a two-handed backhand who stands 196 cm.
Kumstat was born in Prostejov. Kumstat carries an ELO rating of 1525 over 76 rated matches, strongest on clay (1517). Kumstat's next scheduled points drop is 8 points from M15 Segrate 1 on July 27, 2026, when that result rolls off the 52-week ranking, and 18 results currently count toward Kumstat's ranking total.
<a href="https://atprank.com/player/jan-kumstat"><img src="https://atprank.com/api/card/player/jan-kumstat" alt="Live tennis ranking — atprank.com" width="640" height="180" /></a>Live card — updates automatically. Free to embed with the atprank.com link.
From matches in our dataset (2023–present).
Biggest upset victories — matches Jan Kumstat won as the betting underdog, ranked by pre-match odds.
Jan Kumstat’s wins over the highest-rated opponents, by the opponent’s pre-match ELO (since 2023).
Lilian MarmousezM15 Segrate 1 2025 · 7-5 7-6(1)ELO 1646def. 
Marvin MoellerM25 Ceska Lipa 2026 · 7-6(5) 6-4ELO 1624def. 
Maks KasnikowskiAthens Challenger 2025 · 7-5 4-6 6-1ELO 1612def. Marvin MoellerM25 Pardubice 1 2025 · 7-5 6-4ELO 1608def. 
Eric VanshelboimM25 Pardubice 1 2025 · 6-4 6-4ELO 1594Last match Jul 18, 2026 · last win Jul 17, 2026
1 points behind Constantin Bittoun Kouzmine at #506.
Points needed to reach each tier, assuming other players’ totals stay the same.
Valid results outside the best-18 that don't count toward the ranking right now — they promote in as counting results drop off.
Jan Kumstat's most-played opponents. Open any rivalry for the full meeting record and a win-probability prediction.
Alex Martinez
Saba Purtseladze
Thijs Boogaard
Manuel Mazza