Alexander Cozbinov defeated Ezekiel Clark 6-1 6-2 in the Knoxville CH qualifying round 1 on hard. The upset overturned the form book — Ezekiel Clark came in leading the head-to-head 2–0, defending last year's round of 32. Alexander Cozbinov claimed a first win over Ezekiel Clark in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-07-10 | M15 Norman 1 | R32 | hard | Ezekiel Clark | 7-6(3) 6-0 |
| 2019-06-05 | M15 Champaign 1 | R32 | hard | Ezekiel Clark | 4-6 6-2 6-4 |
Averages over each player's completed matches in the selected window (74 vs 141). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About