Diego Nargiso has found clay courts difficult, recording 32–66 across 98 matches (32.7%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Diego Nargiso has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Diego Nargiso has struggled at Grand Slam level on clay: 1–3 (25.0%) in 4 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Diego Nargiso has struggled at Masters level on clay: 3–14 (17.6%) in 17 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

One final reached on clay, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 2 semifinals. 4 quarterfinals.

vs. Top 10 on clay: 0–7 (0.0%, 7 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: 1–4 (20.0%); best-of-three: 31–62 (33.3%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.

Best season: 2000 — 7–2 (77.8%) from 9 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.