

Anastasija Sevastova defeated Sloane Stephens 6-2 6-3 in the US Open quarter-final on hard. The upset overturned the form book — Sloane Stephens came in ranked #240, defending the title. Anastasija Sevastova extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-02-26 | Austin | R16 | hard | Anastasija Sevastova | 6-3 6-2 |
| 2018-08-06 | Montreal | QF | hard | Sloane Stephens | 6-2 6-2 |
| 2017-10-31 | Zhuhai | RR | hard | Anastasija Sevastova | 7-5 6-3 |
| 2017-08-28 | US Open | QF | hard | Sloane Stephens | 6-3 3-6 7-6 |
Averages over each player's completed matches in the selected window (197 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Stephens S.: 2 days rest · 4 matches, 81 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