Thomas Muster has been dominant on clay, posting 426–127 across 553 matches (77.0% — exceptional). Few players in the Open Era have sustained that level of dominance across a full career on clay. With 40 titles, among the most prolific clay court champions in the Open Era: Mexico City, Madrid, St. Poelten, Estoril and 20 more.

At Grand Slam level (Roland Garros): a positive 32–13 (71.1%) across 45 matches — a player who generally rises to the occasion at the Slams on clay.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Thomas Muster is elite here — 63–20 (75.9%) across 83 matches. Sustaining that win rate in the Tour's deepest regular-week draws is a defining quality of the very best on this surface.

45 finals reached on clay — converted 40 into titles (outstanding 89% conversion rate). Converting finals at that rate separates champions from contenders. 59 semifinals. 82 quarterfinals.

vs. Top 10 on clay: 23–21 (52.3%, 44 matches). Competitive against the elite, but still narrowly below .500 — closing that gap would directly elevate the overall clay court profile.

By format on clay — best-of-five: 64–18 (78.0%); best-of-three: 362–109 (76.9%). Consistent regardless of format on clay — a sign of a well-rounded game that holds up as matches develop.

Dominant season: 1995 — 65–2 (97.0%) from 67 matches. A campaign of 65 wins on clay in a single season is among the best single-season records the surface has seen — the clearest benchmark of what is achievable at peak level.

Historic: 40 consecutive wins on clay — one of the longest winning streaks on this surface in the Open Era. To sustain that level across so many matches demands physical and mental consistency that very few players in history have matched.