Jesper de Jong has found hard courts difficult, recording 10–16 across 26 matches (38.5%). 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): Jesper de Jong has struggled at Grand Slam level on hard: 2–4 (33.3%) in 6 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): a positive 2–2 (50.0%) across 4 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on hard.

By format on hard — best-of-five: 2–4 (33.3%); best-of-three: 8–12 (40.0%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Best season: 2025 — 6–5 (54.5%) from 11 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.

Recent Form 2026: 3–7 (30.0%) on hard. Last 10: L L L W L L L W L W — mixed results, some inconsistency in the current period.