Robin Haase has a competitive clay court record of 91–86 across 177 matches (51.4%). The record shows a player capable of competing here, though there is clear room to push the win rate higher. Claimed 2 titles on clay: Kitzbuhel.

At Grand Slam level (Roland Garros): Robin Haase has struggled at Grand Slam level on clay: 5–11 (31.3%) in 16 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): Robin Haase is 9–16 (36.0%) across 25 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole clay swing.

4 finals reached on clay — won 2, lost 2 (solid 50% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on clay. 10 semifinals. 19 quarterfinals.

vs. Top 10 on clay: 0–11 (0.0%, 11 matches). Top 10 opponents have represented a clear ceiling on clay; addressing that deficit is the single biggest lever for improving the overall record here.

By format on clay — best-of-five: 13–15 (46.4%); best-of-three: 78–71 (52.3%). Slightly stronger in three-set contests on clay, though the five-set record is still respectable.

Best season: 2007 — 4–2 (66.7%) from 6 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.