Hyeon Chung defeated Denis Istomin 6-1 7-5 6-1 in the Roland Garros round of 64 on clay. Hyeon Chung extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-04-24 | Barcelona | R64 | clay | Hyeon Chung | 6-4 6-4 |
| 2015-07-17 | Davis Cup G1 R2: UZB vs KOR | RR | clay | Denis Istomin | 6-1 1-0 RET |
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 (195 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About