John Marks Clay Court Stats & Match Results

John Marks has found clay courts difficult, recording 6–27 across 33 matches (18.2%). 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): John Marks 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: 1–2 (33.3%); best-of-three: 5–25 (16.7%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Best season: 1976 — 2–6 (25.0%) from 8 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.