Egor Agafonov defeated Kalman L. Boyd 2-6 7-6 6-4 in the M15 Monastir 28 round of 32 on hard. The upset overturned the form book — Kalman L. Boyd came in leading the head-to-head 1–0. Egor Agafonov claimed a first win over Kalman L. Boyd in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-10-31 | M15 Monastir 44 | R32 | hard | Kalman L. Boyd | 1-6 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.