Mario Ancic has an impressive grass court record of 40–14 across 54 matches (74.1% — strong). A win rate of that calibre over 54 matches is a reliable indicator of genuine quality on this surface. Claimed 2 titles on grass: 's-Hertogenbosch.

At Grand Slam level (Wimbledon): Mario Ancic has been outstanding — 17–6 (73.9%) across 23 matches. Winning more than 7 in 10 Grand Slam matches on grass is the benchmark of an all-time great on this surface.

2 finals reached on grass — converted 2 into titles (outstanding 100% conversion rate). Converting finals at that rate separates champions from contenders. 4 semifinals. 7 quarterfinals.

vs. Top 10 on grass: 3–7 (30.0%, 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: 18–6 (75.0%); best-of-three: 22–8 (73.3%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 2006 — 9–1 (90.0%) from 10 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Mario Ancic put together an impressive 9-match winning streak on grass, highlighting the ability to maintain high performance across multiple tournament rounds and events.