Martina Hingis defeated Ai Sugiyama 6-1 6-2 in the Indian Wells round of 32 on hard. The result followed the form book — Martina Hingis came in leading the head-to-head 4–1, defending last year's quarter-final. Martina Hingis extended the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-26 | Wimbledon | R32 | grass | Ai Sugiyama | 7-5 3-6 6-4 |
| 2001-07-30 | San Diego | QF | hard | Martina Hingis | 6-3 6-4 |
| 2001-01-29 | Tokyo | QF | hard | Martina Hingis | 6-0 5-7 6-2 |
| 1999-02-02 | Tokyo | R16 | hard | Martina Hingis | 3-6 6-1 6-2 |
| 1998-08-17 | Canadian Open | R16 | hard | Martina Hingis | 6-3 6-0 |
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 172). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About