Serena Williams defeated Magui Serna 6-1 6-0 in the Key Biscayne round of 32 on hard. The result followed the form book — Serena Williams came in leading the head-to-head 2–0, defending last year's quarter-final. Serena Williams extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-06-21 | Wimbledon | R32 | grass | Serena Williams | 6-4 6-0 |
| 1999-01-18 | Australian Open | R64 | hard | Serena Williams | 6-1 6-3 |
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 (199 vs 16). ATP, WTA & Challenger.