Pablo Cuevas defeated Jack Sock 6-4 7-5 7-6 in the US Open round of 128 on hard. The upset overturned the form book — Jack Sock came in defending last year's round of 64. Pablo Cuevas extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2020-08-31 | US Open | R128 | hard | Jack Sock | 3-6 6-4 6-2 4-6 7-6(2) |
| 2018-05-07 | Madrid Masters | R64 | clay | Pablo Cuevas | 6-7(5) 6-4 6-0 |
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 (170 vs 124). ATP, WTA & Challenger.