Mario Tabares has found clay courts difficult, recording 6–9 across 15 matches (40.0%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar.

At Grand Slam level (Roland Garros): Mario Tabares has yet to record a win on clay at this stage — 0–1 across 1 Grand Slam match. Breaking through here would mark a significant step forward on this surface.

By format on clay — best-of-five: 5–5 (50.0%); best-of-three: 1–4 (20.0%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.