

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 ranked #56, 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 6-1 6-4 |
Averages over each player's completed matches in the selected window (35 vs 23). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Griekspoor T.: 10 days rest · 3 matches (14d). 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 hard field, opponent-adjusted over 52 weeks). About