Heinz Gunthardt holds a solid hard court record of 73–57 across 130 matches (56.2%). A winning majority across 130 matches shows consistent ability to get results on hard. Claimed 2 titles on hard: Johannesburg-1, Toulouse.

At Grand Slam level (Australian Open & US Open): a positive 11–7 (61.1%) across 18 matches — a player who generally rises to the occasion at the Slams on hard.

3 finals reached on hard — won 2, lost 1 (solid 67% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on hard. 8 semifinals. 18 quarterfinals.

vs. Top 10 on hard: 2–15 (11.8%, 17 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 10–10 (50.0%); best-of-three: 63–47 (57.3%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Best season: 1983 — 10–4 (71.4%) from 14 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.