Paul Kronk has found clay courts difficult, recording 52–87 across 139 matches (37.4%). 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): Paul Kronk has struggled at Grand Slam level on clay: 3–8 (27.3%) in 11 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

2 semifinals on clay without yet reaching a final — consistent deep runs that show the ability to string together wins across a full draw, with the step to the final still to come. 6 quarterfinals adds further depth to that picture.

vs. Top 10 on clay: 1–5 (16.7%, 6 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: 0–6 (0.0%); best-of-three: 52–81 (39.1%). 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: 1974 — 12–12 (50.0%) from 24 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.