Carlos Costa has a competitive hard court record of 44–53 across 97 matches (45.4%). The record shows a player capable of competing here, though there is clear room to push the win rate higher.

At Grand Slam level (Australian Open & US Open): Carlos Costa is 10–11 (47.6%) across 21 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 hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): a positive 11–11 (50.0%) across 22 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on hard.

2 semifinals on hard without yet reaching a final — consistent deep runs that show the ability to string together wins across a full draw, with the step to the final still to come. 6 quarterfinals adds further depth to that picture.

vs. Top 10 on hard: 3–5 (37.5%, 8 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 12–12 (50.0%); best-of-three: 32–41 (43.8%). Slightly better in five-set matches on hard — a positive sign for the Slams specifically.

Best season: 1993 — 8–5 (61.5%) from 13 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.