Martina Hingis defeated Patty Schnyder 4-6 6-0 6-3 in the WTA Tour Championships round of 16 on carpet. The upset overturned the form book — Patty Schnyder came in leading the head-to-head 3–1. Martina Hingis narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-07-30 | San Diego | R16 | hard | Patty Schnyder | 6-1 6-7(4) 6-3 |
| 2007-05-07 | Berlin | R16 | grass | Patty Schnyder | 6-4 6-0 |
| 1999-03-05 | Indian Wells | R16 | hard | Martina Hingis | 6-1 6-3 |
| 1998-09-28 | Grand Slam Cup | SF | hard | Patty Schnyder | 5-7 7-5 5-5 RET |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (84 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About