Tommy Haas holds a solid grass court record of 57–33 across 90 matches (63.3%). A winning majority across 90 matches shows consistent ability to get results on grass. Claimed 2 titles on grass: Halle.

At Grand Slam level (Wimbledon): a positive 24–15 (61.5%) across 39 matches — a player who generally rises to the occasion at the Slams on grass.

2 finals reached on grass — converted 2 into titles (outstanding 100% conversion rate). Converting finals at that rate separates champions from contenders. 7 semifinals. 10 quarterfinals.

vs. Top 10 on grass: 7–7 (50.0%, 14 matches). Competitive against the elite, but still narrowly below .500 — closing that gap would directly elevate the overall grass court profile.

By format on grass — best-of-five: 24–15 (61.5%); best-of-three: 33–18 (64.7%). Slightly stronger in three-set contests on grass, though the five-set record is still respectable.

Best season: 2009 — 10–1 (90.9%) from 11 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Tommy Haas put together an impressive 8-match winning streak on grass, highlighting the ability to maintain high performance across multiple tournament rounds and events.