Mark Edmondson has found clay courts difficult, recording 66–82 across 148 matches (44.6%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Mark Edmondson has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Mark Edmondson has struggled at Grand Slam level on clay: 3–10 (23.1%) in 13 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

One final reached on clay, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 4 semifinals. 10 quarterfinals.

vs. Top 10 on clay: 1–11 (8.3%, 12 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: 3–8 (27.3%); best-of-three: 63–74 (46.0%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.

Best season: 1985 — 3–2 (60.0%) from 5 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.