Caroline Wozniacki defeated Monica Puig 6-1 1-6 6-3 in the Miami round of 64 on hard. The upset overturned the form book — Monica Puig came in leading the head-to-head 3–2, defending last year's round of 128, but Caroline Wozniacki had been the form player, winning 4 of their last 6 on hard. Caroline Wozniacki narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-09-24 | Wuhan | R16 | hard | Monica Puig | 7-6(10) 7-5 |
| 2018-03-19 | Miami | R64 | hard | Monica Puig | 0-6 6-4 6-4 |
| 2017-02-13 | Doha | SF | hard | Caroline Wozniacki | 6-1 6-2 |
| 2017-01-09 | Sydney | R32 | hard | Caroline Wozniacki | 6-3 2-6 6-4 |
| 2016-06-20 | Eastbourne | R16 | grass | Monica Puig | 4-6 6-3 6-4 |
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 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About