David Nainkin has found hard courts difficult, recording 17–30 across 47 matches (36.2%). 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): David Nainkin has struggled at Grand Slam level on hard: 3–5 (37.5%) in 8 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): David Nainkin is 5–6 (45.5%) across 11 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole hard swing.

vs. Top 10 on hard: 1–3 (25.0%, 4 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 3–6 (33.3%); best-of-three: 14–24 (36.8%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Best season: 1993 — 4–4 (50.0%) from 8 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.