Huub Van Boeckel has found grass courts difficult, recording 9–12 across 21 matches (42.9%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Huub Van Boeckel has reached 1 final without yet claiming a title on grass — one of the finest margins in tennis.

At Grand Slam level (Wimbledon): Huub Van Boeckel 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.

One final reached on grass, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 1 semifinal. 2 quarterfinals.

By format on grass — best-of-five: 2–4 (33.3%); best-of-three: 7–8 (46.7%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on grass.

Best season: 1984 — 6–3 (66.7%) from 9 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.