Fabio Fognini defeated Jack Sock 6-7 7-6 7-5 in the Stockholm quarter-final on hard. The upset overturned the form book — Jack Sock came in leading the head-to-head 2–0, defending last year's final. Fabio Fognini claimed a first win over Jack Sock in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-09-20 | Laver Cup | RR | hard | Jack Sock | 6-1 7-6(3) |
| 2015-03-25 | Miami Masters | R64 | hard | Jack Sock | 7-6(4) 6-1 |
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.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About