Alex Bolt defeated Jack Sock 4-6 6-3 6-2 6-2 in the Australian Open round of 128 on hard. The upset overturned the form book — Jack Sock came in leading the head-to-head 1–0, defending last year's round of 128. Alex Bolt claimed a first win over Jack Sock in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-12 | Newport | R32 | grass | Jack Sock | 3-6 6-4 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 124). ATP, WTA & Challenger.