Shintaro Mochizuki defeated Mackenzie Mcdonald 2-6 6-4 6-2 in the Surbiton CH round of 16 on grass. The upset overturned the form book — Mackenzie Mcdonald came in leading the head-to-head 2–1, defending last year's round of 32. Shintaro Mochizuki narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-06-16 | Challenger Men - Singles: Nottingham (United Kingdom), Grass | R16 | grass | Shintaro Mochizuki | 5-7 |
| 2025-11-02 | Athens | Q2 | hard | Mackenzie Mcdonald | 4-6 6-2 6-2 |
| 2022-09-26 | Seoul | R16 | hard | Mackenzie Mcdonald | 6-3 6-4 |
Averages over each player's completed matches in the selected window (150 vs 137). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Mochizuki S.: 6 days rest · 1 match, 25 games (7d) · Mcdonald M.: 7 days rest · 1 match, 32 games (7d). Higher means fresher. About
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 grass field, opponent-adjusted over 52 weeks). About