Jan-Michael Gambill has a competitive grass court record of 23–21 across 44 matches (52.3%). The record shows a player capable of competing here, though there is clear room to push the win rate higher.

At Grand Slam level (Wimbledon): a positive 10–7 (58.8%) across 17 matches — a player who generally rises to the occasion at the Slams on grass.

vs. Top 10 on grass: 2–4 (33.3%, 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: 10–7 (58.8%); best-of-three: 13–14 (48.1%). Significantly better in five-set matches — a strong physical profile on grass that tends to tell as matches and tournaments progress.

Best season: 2000 — 8–3 (72.7%) from 11 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.