M. Arnaldi leads the head-to-head 3-2 since 2018 against F. Cobolli, over 5 matches.
| Surface | F. Cobolli | M. Arnaldi |
|---|---|---|
| Clay | 2 | 3 |
| Date | Winner | Score | Event |
|---|---|---|---|
| May 29, 2025 | F. Cobolli | 3 - 1 | French Open · 1/32-finals · clay |
| July 26, 2023 | M. Arnaldi | 2 - 0 | ATP Umag · 1/8-finals · clay |
| Aug. 1, 2022 | M. Arnaldi | 2 - 1 | Cordenons · 1/16-finals · clay |
| May 26, 2022 | M. Arnaldi | 2 - 1 | Vicenza · 1/8-finals · clay |
| Oct. 13, 2021 | F. Cobolli | 2 - 1 | Napoli 2 · 1/8-finals · clay |