Todd Nelson 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): Todd Nelson has struggled at Grand Slam level on clay: 1–3 (25.0%) in 4 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

By format on clay — best-of-five: 1–3 (25.0%); best-of-three: 0–3 (0.0%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.