Angelique Kerber defeated Karin Knapp 7-5 6-2 in the US Open round of 64 on hard. The result followed the form book — Angelique Kerber came in leading the head-to-head 1–0, defending last year's round of 32. Angelique Kerber extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-12 | Cincinnati | R64 | hard | Angelique Kerber | 6-7(6) 6-0 6-1 |
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 (198 vs 59). ATP, WTA & Challenger.