

Ethan Quinn defeated Tallon Griekspoor 6-2 6-3 6-2 in the Australian Open round of 128 on hard. The upset overturned the form book — Tallon Griekspoor came in leading the head-to-head 2–0, defending last year's round of 128. Ethan Quinn claimed a first win over Tallon Griekspoor in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-06-22 | Mallorca | R16 | grass | Tallon Griekspoor | 7-5 6-4 |
| 2025-05-26 | Roland Garros | R32 | clay | Tallon Griekspoor | 4-6 6-1 6-7(2) 6-1 6-4 |
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 (28 vs 20). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Quinn E.: 13 days rest · 1 match (14d) · Griekspoor T.: 14 days rest · 1 match (14d). Higher means fresher. About