Andrea Petkovic defeated Venus Williams 6-1 3-6 7-5 in the Stanford quarter-final on hard. The upset overturned the form book — Venus Williams came in leading the head-to-head 3–1, but Andrea Petkovic had been the form player, winning 2 of their last 6 on hard. Andrea Petkovic narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-04 | Indian Wells | R128 | hard | Venus Williams | 6-4 0-6 6-3 |
| 2012-10-15 | Luxembourg | SF | hard | Venus Williams | 5-7 6-4 6-4 |
| 2011-06-13 | Eastbourne | R32 | grass | Venus Williams | 7-5 5-7 6-3 |
| 2011-01-17 | Australian Open | R32 | hard | Andrea Petkovic | 1-0 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 (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About