Serena Williams defeated Andrea Petkovic 6-4 6-4 in the Brisbane round of 16 on hard. The result followed the form book — Serena Williams came in leading the head-to-head 4–0, defending the title. Serena Williams extended the head-to-head to 5–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-08-10 | Toronto | R16 | hard | Serena Williams | 6-3 6-2 |
| 2014-07-28 | Stanford | SF | hard | Serena Williams | 7-5 6-0 |
| 2014-05-12 | Rome | R32 | clay | Serena Williams | 6-2 6-2 |
| 2010-05-03 | Rome | R16 | clay | Serena Williams | 6-2 3-6 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 (199 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About