Roscoe Tanner has an impressive hard court record of 192–93 across 285 matches (67.4% — strong). A win rate of that calibre over 285 matches is a reliable indicator of genuine quality on this surface. 4 titles on hard: Christchurch, Las Vegas, Palm Springs, Rancho Mirage — a record that reflects consistent ability to close out tournaments on this surface.

At Grand Slam level (Australian Open & US Open): Roscoe Tanner has been outstanding — 19–7 (73.1%) across 26 matches. Winning more than 7 in 10 Grand Slam matches on hard is the benchmark of an all-time great on this surface.

12 finals reached on hard — won 4, lost 8 (33% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 23 semifinals. 49 quarterfinals.

vs. Top 10 on hard: 12–21 (36.4%, 33 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: 23–12 (65.7%); best-of-three: 169–81 (67.6%). Consistent regardless of format on hard — a sign of a well-rounded game that holds up as matches develop.

Peak season: 1979 — 21–5 (80.8%) from 26 matches. That year captures the ceiling of what Roscoe Tanner can do on hard when performing at their best and represents the standard to aim for.