Denis Kudla defeated Jack Sock 6-4 6-7 6-3 in the San Jose round of 32 on hard. The upset overturned the form book — Jack Sock came in leading the head-to-head 2–1, but Denis Kudla had been the form player, winning 3 of their last 8 on hard. Denis Kudla narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-07-25 | Canada Masters | R64 | hard | Jack Sock | 6-2 6-2 |
| 2015-10-26 | Basel | R32 | hard | Jack Sock | 6-4 6-2 |
| 2015-07-27 | Atlanta | R16 | hard | Denis Kudla | 7-6(6) 6-3 |
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 (200 vs 199). ATP, WTA & Challenger.