
Alexander Bublik defeated Jack Sock 6-3 3-6 6-2 in the Newport round of 16 on grass. The upset overturned the form book — Jack Sock came in leading the head-to-head 1–0, defending last year's quarter-final. Alexander Bublik claimed a first win over Jack Sock in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-30 | US Open | R64 | hard | Jack Sock | 7-6(3) 6-7(2) 6-4 4-6 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 60). ATP, WTA & Challenger.
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.