Ricki Osterthun has found grass courts difficult, recording 0–8 across 8 matches (0.0%). 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): Ricki Osterthun has yet to record a win on grass at this stage — 0–4 across 4 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

By format on grass — best-of-five: 0–4 (0.0%); best-of-three: 0–4 (0.0%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 1985 — 0–5 (0.0%) from 5 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.