Derek Tarr has found clay courts difficult, recording 11–22 across 33 matches (33.3%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar.

At Grand Slam level (Roland Garros): Derek Tarr has yet to record a win on clay at this stage — 0–3 across 3 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

By format on clay — best-of-five: 0–3 (0.0%); best-of-three: 11–19 (36.7%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.

Best season: 1983 — 3–5 (37.5%) from 8 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.