John McEnroe has been dominant on hard, posting 289–65 across 354 matches (81.6% — exceptional). Few players in the Open Era have sustained that level of dominance across a full career on hard. With 22 titles, among the most prolific hard court champions in the Open Era: Stockholm, US Open, Sydney-1, Los Angeles and 8 more.

At Grand Slam level (Australian Open & US Open): John McEnroe has been outstanding — 73–14 (83.9%) across 87 matches. Winning more than 7 in 10 Grand Slam matches on hard is the benchmark of an all-time great on this surface.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): a positive 9–6 (60.0%) across 15 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on hard.

30 finals reached on hard — won 22, lost 8 (solid 73% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on hard. 45 semifinals. 58 quarterfinals.

vs. Top 10 on hard: 38–22 (63.3%, 60 matches). Winning above .500 against the world's best on hard is a benchmark of genuine elite quality on this surface.

By format on hard — best-of-five: 84–17 (83.2%); best-of-three: 205–48 (81.0%). Slightly better in five-set matches on hard — a positive sign for the Slams specifically.

Peak season: 1985 — 25–1 (96.2%) from 26 matches. That year captures the ceiling of what John McEnroe can do on hard when performing at their best and represents the standard to aim for.

John McEnroe assembled a remarkable 29-match winning streak on hard — a run of that length goes far beyond form and into a different level of dominance on this surface.