| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-08-12 | Cincinnati Masters | R64 | hard | John Isner | 7-6(3) 1-6 7-5 |
| 2018-08-27 | US Open | R32 | hard | John Isner | 7-6(8) 6-7(6) 6-3 7-5 |
| 2018-02-02 | Davis Cup WG R1: USA vs SRB | RR | clay | John Isner | 6-4 6-7(7) 6-3 3-6 7-6(4) |
| 2017-06-26 | Eastbourne | R16 | grass | John Isner | 3-6 7-6(2) 7-6(4) |
| 2016-02-08 | Buenos Aires | R16 | clay | Dusan Lajovic | 7-6(10) 4-6 7-6(6) |
| 2015-05-17 | Nice | QF | clay | John Isner | 7-6(3) 6-4 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.