Shintaro Mochizuki has found hard courts difficult, recording 6–29 across 35 matches (17.1%). 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): Shintaro Mochizuki has struggled at Grand Slam level on hard: 1–4 (20.0%) in 5 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): Shintaro Mochizuki has struggled at Masters level on hard: 0–4 (0.0%) in 4 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

By format on hard — best-of-five: 1–4 (20.0%); best-of-three: 5–25 (16.7%). Slightly better in five-set matches on hard — a positive sign for the Slams specifically.

Best season: 2023 — 3–4 (42.9%) from 7 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.

Recent Form 2026: 0–9 (0.0%) on hard. Last 9: L L L L L L L L L — a difficult recent run, with results not going the right way on this surface.