Horacio de la Pena has found hard courts difficult, recording 24–34 across 58 matches (41.4%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Horacio de la Pena has reached 1 final without yet claiming a title on hard — one of the finest margins in tennis.

At Grand Slam level (Australian Open & US Open): Horacio de la Pena has struggled at Grand Slam level on hard: 4–7 (36.4%) in 11 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

One final reached on hard, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 2 semifinals. 3 quarterfinals.

vs. Top 10 on hard: 0–5 (0.0%, 5 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: 6–9 (40.0%); best-of-three: 18–25 (41.9%). Consistent regardless of format on hard — a sign of a well-rounded game that holds up as matches develop.

Best season: 1985 — 5–3 (62.5%) from 8 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.