Jack Sock defeated Robin Haase 6-3 7-5 3-6 6-7 6-2 in the Roland Garros round of 128 on clay. The result followed the form book — Jack Sock came in leading the head-to-head 2–0, defending last year's round of 16. Jack Sock extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-10-23 | Basel | R16 | hard | Jack Sock | 6-4 2-6 6-4 |
| 2016-06-27 | Wimbledon | R64 | grass | Jack Sock | 6-1 6-3 6-7(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.