Cassio Motta has found grass courts difficult, recording 8–12 across 20 matches (40.0%). 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): Cassio Motta has struggled at Grand Slam level on grass: 5–8 (38.5%) in 13 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

By format on grass — best-of-five: 5–8 (38.5%); best-of-three: 3–4 (42.9%). Slightly stronger in three-set contests on grass, though the five-set record is still respectable.

Best season: 1983 — 4–2 (66.7%) from 6 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.