Gabriel Diallo has found clay courts difficult, recording 7–10 across 17 matches (41.2%). 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): Gabriel Diallo has struggled at Grand Slam level on clay: 1–3 (25.0%) in 4 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): a positive 4–4 (50.0%) across 8 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on clay.

By format on clay — best-of-five: 1–2 (33.3%); best-of-three: 6–8 (42.9%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.

Best season: 2025 — 6–4 (60.0%) from 10 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.

Recent Form 2026: 1–5 (16.7%) on clay. Last 6: L L W L L L — a difficult recent run, with results not going the right way on this surface.