Conchita Martinez defeated Jennifer Capriati 6-1 6-2 in the US Open round of 128 on hard. The upset overturned the form book — Jennifer Capriati came in leading the head-to-head 3–2. Conchita Martinez narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-02-17 | Dubai | QF | hard | Jennifer Capriati | 6-2 6-3 |
| 2002-10-14 | Zurich | R16 | hard | Conchita Martinez | 6-0 6-3 |
| 2001-05-07 | Berlin | QF | grass | Jennifer Capriati | 2-6 6-3 6-4 |
| 1999-07-26 | Stanford | R32 | hard | Jennifer Capriati | 5-7 6-4 6-4 |
| 1997-03-31 | Hilton Head | R16 | clay | Conchita Martinez | 6-0 5-7 6-4 |
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 (18 vs 31). ATP, WTA & Challenger.