Bob Hewitt has an impressive clay court record of 117–59 across 176 matches (66.5% — strong). A win rate of that calibre over 176 matches is a reliable indicator of genuine quality on this surface. 4 titles on clay: Clemmons, Munich, Bournemouth, Indianapolis — a record that reflects consistent ability to close out tournaments on this surface.

At Grand Slam level (Roland Garros): Bob Hewitt is 7–9 (43.8%) across 16 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

9 finals reached on clay — won 4, lost 5 (44% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 11 semifinals. 24 quarterfinals.

vs. Top 10 on clay: 1–5 (16.7%, 6 matches). Top 10 opponents have represented a clear ceiling on clay; addressing that deficit is the single biggest lever for improving the overall record here.

By format on clay — best-of-five: 46–20 (69.7%); best-of-three: 71–39 (64.5%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Peak season: 1972 — 24–4 (85.7%) from 28 matches. That year captures the ceiling of what Bob Hewitt can do on clay when performing at their best and represents the standard to aim for.