Ron Holmberg has found clay courts difficult, recording 9–17 across 26 matches (34.6%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Ron Holmberg has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): 1–2 across just 3 matches — still very early days at this level on clay.

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. 1 semifinal. 5 quarterfinals.

By format on clay — best-of-five: 3–5 (37.5%); best-of-three: 6–12 (33.3%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Best season: 1970 — 2–4 (33.3%) from 6 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.