Denis Istomin defeated Reilly Opelka 6-4 6-2 in the Chicago CH final on hard. The upset overturned the form book — Reilly Opelka came in leading the head-to-head 2–0. Denis Istomin claimed a first win over Reilly Opelka in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2020-03-06 | Davis Cup QLS R1: USA vs UZB | RR | hard | Reilly Opelka | 6-2 7-5 |
| 2019-02-11 | New York | R16 | hard | Reilly Opelka | 6-7(8) 7-6(6) 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
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
Averages over each player's completed matches in the selected window (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About