M. Arnaldi and J. Munar are level 3-3 in their head-to-head since 2018 over 6 matches.
| Surface | M. Arnaldi | J. Munar |
|---|---|---|
| Clay | 3 | 2 |
| Hard | 0 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| May 6, 2026 | M. Arnaldi | 2 - 1 | Rome · 1/64-finals · clay |
| Feb. 7, 2025 | J. Munar | 2 - 1 | Dallas · Quarter-finals · hard |
| June 10, 2023 | M. Arnaldi | 2 - 1 | Heilbronn Challenger Men · Quarter-finals · clay |
| April 30, 2023 | J. Munar | 2 - 1 | ATP Madrid · 1/16-finals · clay |
| April 18, 2023 | M. Arnaldi | 2 - 0 | ATP Barcelona · 1/32-finals · clay |
| June 7, 2022 | J. Munar | 2 - 0 | Perugia · 1/16-finals · clay |