Roger Federer has been dominant on clay, posting 226–71 across 297 matches (76.1% — exceptional). Few players in the Open Era have sustained that level of dominance across a full career on clay. With 11 titles, among the most prolific clay court champions in the Open Era: Hamburg Masters, Munich, Gstaad, Estoril and 3 more.

At Grand Slam level (Roland Garros): Roger Federer has been outstanding — 73–17 (81.1%) across 90 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): Roger Federer is elite here — 113–38 (74.8%) across 151 matches. Sustaining that win rate in the Tour's deepest regular-week draws is a defining quality of the very best on this surface.

26 finals reached on clay — won 11, lost 15 (42% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 34 semifinals. 43 quarterfinals.

vs. Top 10 on clay: 32–29 (52.5%, 61 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: 89–25 (78.1%); best-of-three: 137–46 (74.9%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Peak season: 2009 — 18–2 (90.0%) from 20 matches. That year captures the ceiling of what Roger Federer can do on clay when performing at their best and represents the standard to aim for.