Alberto Tous has found clay courts difficult, recording 39–52 across 91 matches (42.9%). 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): Alberto Tous has struggled at Grand Slam level on clay: 3–5 (37.5%) in 8 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

6 quarterfinals on clay, including one run to the semifinal — regularly reaching that stage is a solid baseline, with the next step being to break through to the final rounds more often.

vs. Top 10 on clay: 0–4 (0.0%, 4 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: 3–5 (37.5%); best-of-three: 36–47 (43.4%). Slightly stronger in three-set contests on clay, though the five-set record is still respectable.

Best season: 1988 — 10–11 (47.6%) from 21 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.