John Andrews has found grass courts difficult, recording 6–12 across 18 matches (33.3%). 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): John Andrews 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.

By format on grass — best-of-five: 3–5 (37.5%); best-of-three: 3–7 (30.0%). Slightly better in five-set matches on grass — a positive sign for the Slams specifically.

Best season: 1974 — 2–3 (40.0%) from 5 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.