Glenn Layendecker has found grass courts difficult, recording 19–24 across 43 matches (44.2%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Glenn Layendecker has reached 1 final without yet claiming a title on grass — one of the finest margins in tennis.

At Grand Slam level (Wimbledon): Glenn Layendecker has struggled at Grand Slam level on grass: 1–7 (12.5%) in 8 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. 2 semifinals. 5 quarterfinals.

By format on grass — best-of-five: 1–7 (12.5%); best-of-three: 18–17 (51.4%). 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: 1985 — 5–2 (71.4%) from 7 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Glenn Layendecker recorded a notable 5-match winning streak on grass — a run that demonstrates consistency across consecutive draws on this surface.