David Mustard has found grass courts difficult, recording 7–13 across 20 matches (35.0%). 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 (Wimbledon): David Mustard has struggled at Grand Slam level on grass: 3–5 (37.5%) in 8 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

vs. Top 10 on grass: 0–3 (0.0%, 3 matches). Top 10 opponents have represented a clear ceiling on grass; addressing that deficit is the single biggest lever for improving the overall record here.

By format on grass — best-of-five: 3–5 (37.5%); best-of-three: 4–8 (33.3%). Slightly better in five-set matches on grass — a positive sign for the Slams specifically.

Best season: 1984 — 2–4 (33.3%) from 6 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.