Francisco Yunis has found clay courts difficult, recording 27–37 across 64 matches (42.2%). 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): a positive 3–2 (60.0%) across 5 matches — a player who generally rises to the occasion at the Slams on clay.

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. 3 quarterfinals adds further depth to that picture.

By format on clay — best-of-five: 3–2 (60.0%); best-of-three: 24–35 (40.7%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Best season: 1984 — 3–3 (50.0%) from 6 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.