Dan Cassidy has found grass courts difficult, recording 7–9 across 16 matches (43.8%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Claimed 1 title on grass: Melbourne-2.

At Grand Slam level (Wimbledon): Dan Cassidy has struggled at Grand Slam level on grass: 1–3 (25.0%) in 4 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

One final reached on grass, converted into a title — a perfect finals record on this surface. 1 semifinal. 1 quarterfinal.

By format on grass — best-of-five: 1–3 (25.0%); best-of-three: 6–6 (50.0%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on grass.

Best season: 1984 — 6–3 (66.7%) from 9 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Dan Cassidy recorded a notable 6-match winning streak on grass — a run that demonstrates consistency across consecutive draws on this surface.