Olivier Delaitre has found clay courts difficult, recording 18–48 across 66 matches (27.3%). 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): Olivier Delaitre is 8–12 (40.0%) across 20 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Olivier Delaitre has struggled at Masters level on clay: 2–7 (22.2%) in 9 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

vs. Top 10 on clay: 2–3 (40.0%, 5 matches). Competitive against the elite, but still narrowly below .500 — closing that gap would directly elevate the overall clay court profile.

By format on clay — best-of-five: 8–12 (40.0%); best-of-three: 10–36 (21.7%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Best season: 1991 — 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.