Sergio Casal has a competitive career record of 125–147 across 272 matches (46.0%). The record shows a player capable of competing at Tour level, though there is clear room to push the win rate higher. Claimed 1 title: Florence.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Sergio Casal has struggled at Grand Slam level: 6–15 (28.6%) in 21 matches. The best-of-five format and elite fields make this the toughest benchmark on Tour.
3 finals reached — won 1, lost 2 (33% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 8 semifinals. 21 quarterfinals.
vs. Top 10: 2–19 (9.5%, 21 matches). Top 10 opponents have represented a clear ceiling; addressing that deficit is the single biggest lever for improving the overall record.
By format — best-of-five: 18–28 (39.1%); best-of-three: 107–119 (47.3%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance.
Peak season: 1986 — 24–28 (46.2%) from 52 matches. That year captures the ceiling of what Sergio Casal can do when performing at their best and represents the standard to aim for.