John Feaver has found grass courts difficult, recording 21–46 across 67 matches (31.3%). 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 Feaver has struggled at Grand Slam level on grass: 10–19 (34.5%) in 29 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

vs. Top 10 on grass: 0–5 (0.0%, 5 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: 10–22 (31.3%); best-of-three: 11–24 (31.4%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 1975 — 3–2 (60.0%) from 5 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.