Belus Prajoux has found clay courts difficult, recording 73–103 across 176 matches (41.5%). 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): Belus Prajoux is 8–10 (44.4%) across 18 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

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. 11 quarterfinals adds further depth to that picture.

vs. Top 10 on clay: 3–24 (11.1%, 27 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: 8–10 (44.4%); best-of-three: 65–93 (41.1%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Best season: 1976 — 12–13 (48.0%) from 25 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.