Juan Gisbert Sr holds a solid clay court record of 127–95 across 222 matches (57.2%). A winning majority across 222 matches shows consistent ability to get results on clay. Claimed 1 title on clay: Munich.

At Grand Slam level (Roland Garros): Juan Gisbert Sr has struggled at Grand Slam level on clay: 4–8 (33.3%) in 12 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

4 finals reached on clay — won 1, lost 3 (25% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 10 semifinals. 20 quarterfinals.

vs. Top 10 on clay: 1–11 (8.3%, 12 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: 35–20 (63.6%); best-of-three: 92–75 (55.1%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Best season: 1968 — 11–4 (73.3%) from 15 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.