Marcos Giron has a competitive grass court record of 22–22 across 44 matches (50.0%). The record shows a player capable of competing here, though there is clear room to push the win rate higher. Claimed 1 title on grass: Newport.

At Grand Slam level (Wimbledon): Marcos Giron is 7–7 (50.0%) across 14 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

One final reached on grass, converted into a title — a perfect finals record on this surface. 1 semifinal. 5 quarterfinals.

vs. Top 10 on grass: 1–9 (10.0%, 10 matches). Top 10 opponents have represented a clear ceiling on grass; addressing that deficit is the single biggest lever for improving the overall record here.

By format on grass — best-of-five: 7–7 (50.0%); best-of-three: 15–15 (50.0%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 2024 — 9–4 (69.2%) from 13 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Marcos Giron recorded a notable 5-match winning streak on grass — a run that demonstrates consistency across consecutive draws on this surface.

Recent Form 2026: 3–4 (42.9%) on grass. Last 7: W L L L W W L — mixed results, some inconsistency in the current period.