Sam Riffice defeated Alexander Sarkissian 6-2 6-1 in the M25 Tulsa 1 quarter-final on hard. The upset overturned the form book — Alexander Sarkissian came in leading the head-to-head 1–0, but Sam Riffice had been the form player, winning 8 of their last 10 on hard. Sam Riffice claimed a first win over Alexander Sarkissian in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-09-19 | M25 Houston 1 | R16 | hard | Alexander Sarkissian | 5-7 6-2 2-0 |
Averages over each player's completed matches in the selected window (21 vs 41). 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