Yoshihito Nishioka has found clay courts difficult, recording 19–30 across 49 matches (38.8%). 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): Yoshihito Nishioka is 6–9 (40.0%) across 15 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Yoshihito Nishioka has struggled at Masters level on clay: 4–10 (28.6%) in 14 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

vs. Top 10 on clay: 0–7 (0.0%, 7 matches). Top 10 opponents have represented a clear ceiling on clay; addressing that deficit is the single biggest lever for improving the overall record here.

By format on clay — best-of-five: 6–9 (40.0%); best-of-three: 13–21 (38.2%). Consistent regardless of format on clay — a sign of a well-rounded game that holds up as matches develop.

Best season: 2023 — 5–4 (55.6%) from 9 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.