Christopher Oconnell defeated Chun Hsin Tseng 1-6 6-4 7-5 in the Cordenons CH round of 64 on clay. The upset overturned the form book — Chun Hsin Tseng came in leading the head-to-head 2–1. Christopher Oconnell narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-27 | Canada Masters | R128 | hard | Christopher Oconnell | 6-1 6-2 |
| 2025-04-14 | Munich | Q1 | clay | Chun Hsin Tseng | 6-3 6-2 |
| 2022-09-26 | Seoul | R32 | hard | Chun Hsin Tseng | 6-4 0-0 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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About