Jack Sock defeated Tommy Haas 6-4 6-4 in the Auckland round of 16 on hard. The upset overturned the form book — Tommy Haas came in defending last year's quarter-final. Jack Sock extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-04-10 | Houston | R16 | clay | Jack Sock | 6-4 3-6 6-3 |
| 2013-05-27 | Roland Garros | R64 | clay | Tommy Haas | 7-6(3) 6-2 7-5 |
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 57). ATP, WTA & Challenger.