

Tomas Machac defeated Stefanos Tsitsipas 6-4 3-6 7-6 7-6 in the Australian Open round of 64 on hard. The upset overturned the form book — Stefanos Tsitsipas came in ranked #49, leading the head-to-head 1–0, defending last year's round of 128. Tomas Machac claimed a first win over Stefanos Tsitsipas in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-10-23 | Vienna | R16 | hard | Stefanos Tsitsipas | 6-3 4-6 7-5 |
Averages over each player's completed matches in the selected window (22 vs 33). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Machac T.: 6 days rest · 1 match, 17 games (7d) · Tsitsipas S.: 4 days rest · 2 matches, 46 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 hard field, opponent-adjusted over 52 weeks). About