Jeff Simpson has found hard courts difficult, recording 11–26 across 37 matches (29.7%). 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 (Australian Open & US Open): Jeff Simpson has yet to record a win on hard at this stage — 0–1 across 1 Grand Slam match. Breaking through here would mark a significant step forward on this surface.

By format on hard — best-of-five: 1–4 (20.0%); best-of-three: 10–22 (31.3%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on hard.

Best season: 1973 — 3–6 (33.3%) from 9 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.