R. Collignon leads the all-time head-to-head 2-1 against V. Vacherot, over 3 matches.
| Surface | R. Collignon | V. Vacherot |
|---|---|---|
| Clay | 2 | 0 |
| Hard | 0 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 17, 2026 | R. Collignon | 2 - 1 | Gstaad · Quarter-finals · clay |
| Jan. 10, 2023 | R. Collignon | 0 - 2 | Oeiras 2 · 1/16-finals · clay |
| Jan. 23, 2022 | V. Vacherot | 0 - 2 | M15 Monastir 2 · Final · hard |