Jack Sock defeated Fabio Fognini 6-1 7-6 in the Laver Cup round robin on hard. The result followed the form book — Jack Sock came in defending last year's round-robin. Jack Sock extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-10-16 | Stockholm | QF | hard | Fabio Fognini | 6-7(3) 7-6(2) 7-5 |
| 2015-03-25 | Miami Masters | R64 | hard | Jack Sock | 7-6(4) 6-1 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.