Raphael Calzi defeated Michael Zhu 6-4 6-4 in the M25 Manacor 2 q32 on hard. The upset overturned the form book — Michael Zhu came in leading the head-to-head 1–0, but Raphael Calzi had been the form player, winning 1 of their last 4 on hard. Raphael Calzi claimed a first win over Michael Zhu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-01-16 | M25 Manacor 1 | Q32 | hard | Michael Zhu | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.