Rolf Thung has found clay courts difficult, recording 10–40 across 50 matches (20.0%). 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 (Roland Garros): Rolf Thung has yet to record a win on clay at this stage — 0–3 across 3 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

vs. Top 10 on clay: 0–3 (0.0%, 3 matches). Top 10 opponents have represented a clear ceiling on clay; addressing that deficit is the single biggest lever for improving the overall record here.

By format on clay — best-of-five: 4–4 (50.0%); best-of-three: 6–36 (14.3%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Best season: 1974 — 3–5 (37.5%) from 8 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.