Nathan Ponwith defeated Alexander Petrov 5-7 6-3 6-4 in the M15 San Diego 3 round of 16 on hard. The result followed the form book — Nathan Ponwith came in ranked #1292, leading the head-to-head 3–0. Nathan Ponwith extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-07-27 | M25 Edwardsville 1 | R32 | hard | Nathan Ponwith | 4-6 7-6(0) 6-4 |
| 2022-07-15 | M15 Lakewood 1 | QF | hard | Nathan Ponwith | 4-6 6-4 6-4 |
| 2021-08-03 | M25 Decatur 1 | Q16 | hard | Nathan Ponwith | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.