Raymond Moore has found clay courts difficult, recording 88–116 across 204 matches (43.1%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Claimed 1 title on clay: Berlin.

At Grand Slam level (Roland Garros): Raymond Moore is 13–14 (48.1%) across 27 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

2 finals reached on clay — won 1, lost 1 (solid 50% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on clay. 3 semifinals. 21 quarterfinals.

vs. Top 10 on clay: 0–18 (0.0%, 18 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: 18–26 (40.9%); best-of-three: 70–90 (43.8%). Slightly stronger in three-set contests on clay, though the five-set record is still respectable.

Peak season: 1977 — 17–9 (65.4%) from 26 matches. That year captures the ceiling of what Raymond Moore can do on clay when performing at their best and represents the standard to aim for.