Robin Haase has found hard courts difficult, recording 120–152 across 272 matches (44.1%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Robin Haase has reached 1 final without yet claiming a title on hard — one of the finest margins in tennis.

At Grand Slam level (Australian Open & US Open): Robin Haase has struggled at Grand Slam level on hard: 7–22 (24.1%) in 29 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): Robin Haase is 25–32 (43.9%) across 57 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole hard swing.

One final reached on hard, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 6 semifinals. 18 quarterfinals.

vs. Top 10 on hard: 6–14 (30.0%, 20 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 17–30 (36.2%); best-of-three: 103–122 (45.8%). 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: 2008 — 8–6 (57.1%) from 14 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.