Marcos Giron has found clay courts difficult, recording 20–35 across 55 matches (36.4%). 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): Marcos Giron is 5–7 (41.7%) across 12 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): Marcos Giron is 9–13 (40.9%) across 22 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole clay swing.

vs. Top 10 on clay: 1–6 (14.3%, 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: 5–7 (41.7%); best-of-three: 15–28 (34.9%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Best season: 2023 — 7–6 (53.8%) from 13 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.

Recent Form 2026: 0–4 (0.0%) on clay. Last 4: L L L L — a difficult recent run, with results not going the right way on this surface.