Coco Vandeweghe defeated Kristina Mladenovic 7-5 7-5 in the 's Hertogenbosch final on grass. The upset overturned the form book — Kristina Mladenovic came in leading the head-to-head 3–2, defending last year's quarter-final. Coco Vandeweghe narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-07 | Madrid | R64 | clay | Kristina Mladenovic | 7-5 6-0 |
| 2018-04-21 | Fed Cup WG SF: FRA vs USA | RR | clay | Kristina Mladenovic | 1-6 6-3 6-2 |
| 2016-09-26 | Wuhan | R64 | hard | Kristina Mladenovic | 7-6(5) 6-3 |
| 2016-02-15 | Dubai | R16 | hard | Coco Vandeweghe | 7-5 3-6 6-4 |
| 2014-10-06 | Osaka | R32 | hard | Coco Vandeweghe | 6-2 6-3 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.