Dan Cassidy has found hard courts difficult, recording 22–40 across 62 matches (35.5%). 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): Dan Cassidy has struggled at Grand Slam level on hard: 1–4 (20.0%) in 5 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

2 semifinals on hard without yet reaching a final — consistent deep runs that show the ability to string together wins across a full draw, with the step to the final still to come. 4 quarterfinals adds further depth to that picture.

vs. Top 10 on hard: 0–4 (0.0%, 4 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: 2–6 (25.0%); best-of-three: 20–34 (37.0%). 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: 1984 — 5–3 (62.5%) from 8 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.