ATP · CZE · Right-handed · 19.5 yrs

Jan Kumstat

Rank

#679

Elo

1691

Serve skill

0.108 ±1.793

Return skill

0.131 ±1.790

Points observed

2,546

Hard Elo

1636

Clay Elo

1674

Grass Elo

1691

The ± bands are the rating engine's uncertainty — they widen during absences and tighten with play. We show them instead of pretending the point estimate is exact.

Season record

2-1

Clay

2-1

Career

8-11

Titles

Best rank

#679

Rest days

Matches (14d)

Last 10 matches

Wvs Oleg Prihodko · Prostejov CH · Clay6-4 6-7(10) 6-22026-06-01

Wvs Ji Sung Nam · Prostejov CH · Clay6-4 6-42026-06-01

Lvs Vitaliy Sachko · Prostejov CH · Clay5-7 6-0 6-32026-06-01

Wvs Maks Kasnikowski · Athens CH · Hard7-5 4-6 6-12025-11-24

Wvs Andrin Casanova · Athens CH · Hard6-0 6-12025-11-24

Lvs Michael Geerts · Athens CH · Hard7-6(2) 6-12025-11-24

Lvs Yannick Hanfmann · Lyon CH · Hard6-1 6-32025-11-10

Wvs Aziz Ouakaa · Monastir CH · Hard2-6 6-2 6-32025-10-27

Lvs Arthur Gea · Monastir CH · Hard6-3 6-42025-10-27

Wvs Alex Martinez · Prague CH · Clay6-4 1-6 6-42025-05-05

As of 2026-07-13 01:40 UTC · For informational purposes only; not betting advice.