Serena Williams defeated Angelique Kerber 6-3 6-1 in the WTA Championships round robin on hard. The result followed the form book — Serena Williams came in leading the head-to-head 5–3, defending the title. Serena Williams extended the head-to-head to 6–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-02 | Wimbledon | F | grass | Angelique Kerber | 6-3 6-3 |
| 2016-06-27 | Wimbledon | F | grass | Serena Williams | 7-5 6-3 |
| 2016-01-18 | Australian Open | F | hard | Angelique Kerber | 6-4 3-6 6-4 |
| 2014-07-28 | Stanford | F | hard | Serena Williams | 7-6(1) 6-3 |
| 2014-03-17 | Miami | QF | hard | Serena Williams | 6-2 6-2 |
| 2012-10-22 | WTA Championships | RR | hard | Serena Williams | 6-4 6-1 |
| 2012-08-13 | Cincinnati | QF | hard | Angelique Kerber | 6-4 6-4 |
| 2007-08-27 | US Open | R128 | hard | Serena Williams | 6-3 7-5 |
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 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About