Juan Albert Viloca-Puig has found hard courts difficult, recording 6–23 across 29 matches (20.7%). 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): Juan Albert Viloca-Puig has yet to record a win on hard at this stage — 0–4 across 4 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): Juan Albert Viloca-Puig 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.

vs. Top 10 on hard: 0–3 (0.0%, 3 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: 0–4 (0.0%); best-of-three: 6–19 (24.0%). 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: 1997 — 2–8 (20.0%) from 10 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.