J. Mensik and J. Fonseca are level 1-1 in their head-to-head since 2018 over 2 matches.
| Surface | J. Mensik | J. Fonseca |
|---|---|---|
| Clay | 1 | 0 |
| Hard | 0 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| June 2, 2026 | J. Mensik | 3 - 0 | French Open · Quarter-finals · clay |
| Dec. 20, 2024 | J. Fonseca | 3 - 2 | ATP Next Gen Finals - Jeddah · hard |