Tomas Zib has found clay courts difficult, recording 16–39 across 55 matches (29.1%). 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 (Roland Garros): Tomas Zib has yet to record a win on clay at this stage — 0–3 across 3 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

vs. Top 10 on clay: 1–3 (25.0%, 4 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: 1–5 (16.7%); best-of-three: 15–34 (30.6%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.

Best season: 2006 — 4–7 (36.4%) from 11 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.