Danai Udomchoke has found grass courts difficult, recording 6–13 across 19 matches (31.6%). 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): Danai Udomchoke 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: 2–6 (25.0%); best-of-three: 4–7 (36.4%). 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: 2007 — 3–4 (42.9%) from 7 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.