Brian Dabul has found hard courts difficult, recording 5–10 across 15 matches (33.3%). 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 (Australian Open & US Open): Brian Dabul has struggled at Grand Slam level on hard: 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 hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): Brian Dabul is elite here — 2–1 (66.7%) across 3 matches. Sustaining that win rate in the Tour's deepest regular-week draws is a defining quality of the very best on this surface.

By format on hard — best-of-five: 1–3 (25.0%); best-of-three: 4–7 (36.4%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on hard.

Best season: 2010 — 2–3 (40.0%) from 5 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.