Thomaz Bellucci has found grass courts difficult, recording 6–12 across 18 matches (33.3%). 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): Thomaz Bellucci has struggled at Grand Slam level on grass: 4–7 (36.4%) in 11 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

vs. Top 10 on grass: 0–4 (0.0%, 4 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: 4–7 (36.4%); best-of-three: 2–5 (28.6%). Slightly better in five-set matches on grass — a positive sign for the Slams specifically.