Spencer Papa defeated Nathan Ponwith 6-2 7-6 in the M25 Norman 1 round of 16 on hard. The upset overturned the form book — Nathan Ponwith came in leading the head-to-head 1–0, but Spencer Papa had been the form player, winning 6 of their last 9 on hard. Spencer Papa claimed a first win over Nathan Ponwith in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-07-11 | M15 Norman 1 | R16 | hard | Nathan Ponwith | 7-6(4) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.