Mats Wilander has been dominant on clay, posting 264–80 across 344 matches (76.7% — exceptional). Few players in the Open Era have sustained that level of dominance across a full career on clay. With 20 titles, among the most prolific clay court champions in the Open Era: Roland Garros, Bastad, Geneva, Barcelona and 7 more.

At Grand Slam level (Roland Garros): Mats Wilander has been outstanding — 47–9 (83.9%) across 56 matches. Winning more than 7 in 10 Grand Slam matches on clay is the benchmark of an all-time great on this surface.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Mats Wilander has struggled at Masters level on clay: 1–3 (25.0%) in 4 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

31 finals reached on clay — won 20, lost 11 (solid 65% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on clay. 40 semifinals. 49 quarterfinals.

vs. Top 10 on clay: 24–16 (60.0%, 40 matches). Winning above .500 against the world's best on clay is a benchmark of genuine elite quality on this surface.

By format on clay — best-of-five: 65–18 (78.3%); best-of-three: 199–62 (76.2%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Dominant season: 1983 — 42–2 (95.5%) from 44 matches. A campaign of 42 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: 32 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.