Karol Kucera holds a solid grass court record of 37–25 across 62 matches (59.7%). A winning majority across 62 matches shows consistent ability to get results on grass. Claimed 1 title on grass: Rosmalen.

At Grand Slam level (Wimbledon): Karol Kucera is 11–10 (52.4%) across 21 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

2 finals reached on grass — won 1, lost 1 (solid 50% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on grass. 3 semifinals. 6 quarterfinals.

vs. Top 10 on grass: 1–5 (16.7%, 6 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: 12–10 (54.5%); best-of-three: 25–15 (62.5%). Slightly stronger in three-set contests on grass, though the five-set record is still respectable.

Best season: 1995 — 6–2 (75.0%) from 8 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.