Cliff Drysdale has an impressive clay court record of 103–45 across 148 matches (69.6% — strong). A win rate of that calibre over 148 matches is a reliable indicator of genuine quality on this surface. Claimed 2 titles on clay: Gstaad, Brussels.

At Grand Slam level (Roland Garros): Cliff Drysdale has struggled at Grand Slam level on clay: 2–4 (33.3%) in 6 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

8 finals reached on clay — won 2, lost 6 (25% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 17 semifinals. 27 quarterfinals.

vs. Top 10 on clay: 0–4 (0.0%, 4 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: 28–10 (73.7%); best-of-three: 75–35 (68.2%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Best season: 1968 — 12–2 (85.7%) from 14 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.

Cliff Drysdale put together an impressive 12-match winning streak on clay, highlighting the ability to maintain high performance across multiple tournament rounds and events.