Tuomas Ketola has found hard courts difficult, recording 13–24 across 37 matches (35.1%). 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): Tuomas Ketola has struggled at Grand Slam level on hard: 1–3 (25.0%) in 4 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

By format on hard — best-of-five: 8–10 (44.4%); best-of-three: 5–14 (26.3%). Significantly better in five-set matches — a strong physical profile on hard that tends to tell as matches and tournaments progress.

Best season: 2000 — 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.