Lucca Helguera Casado defeated George Lazarov 3-6 6-3 10-8 in the M15 Kursumlijska Banja 3 q16 on clay. The upset overturned the form book — George Lazarov came in leading the head-to-head 1–0, but Lucca Helguera Casado had been the form player, winning 4 of their last 8 on clay. Lucca Helguera Casado claimed a first win over George Lazarov in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-01-14 | M15 Antalya 2 | Q64 | clay | George Lazarov | 6-2 6-3 |