Filip Dewulf has found grass courts difficult, recording 3–9 across 12 matches (25.0%). 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): Filip Dewulf has struggled at Grand Slam level on grass: 2–4 (33.3%) in 6 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

By format on grass — best-of-five: 2–5 (28.6%); best-of-three: 1–4 (20.0%). Significantly better in five-set matches — a strong physical profile on grass that tends to tell as matches and tournaments progress.

Best season: 1998 — 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.