Heinz Gunthardt has a competitive grass court record of 10–12 across 22 matches (45.5%). 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): Heinz Gunthardt is 8–8 (50.0%) across 16 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

vs. Top 10 on grass: 0–4 (0.0%, 4 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: 8–9 (47.1%); best-of-three: 2–3 (40.0%). Slightly better in five-set matches on grass — a positive sign for the Slams specifically.

Best season: 1985 — 4–2 (66.7%) from 6 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.