Dieter Kindlmann has found clay courts difficult, recording 1–6 across 7 matches (14.3%). 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 (Roland Garros): 1–2 across just 3 matches — still very early days at this level on clay.

By format on clay — best-of-five: 1–2 (33.3%); best-of-three: 0–4 (0.0%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.