Tobias Kamke defeated Denis Istomin 5-7 6-4 6-4 in the Quimper 2 CH round of 32 on hard. The upset overturned the form book — Denis Istomin came in leading the head-to-head 2–0. Tobias Kamke claimed a first win over Denis Istomin in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-05-31 | Roland Garros | Q3 | clay | Denis Istomin | 6-4 7-6(5) |
| 2013-08-26 | US Open | R64 | hard | Denis Istomin | 6-4 6-2 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (60 vs 86). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About