If Nadal isn't the clay GOAT in terms of achievements, who is? Nadal has won more times on clay at the French Open, Monte Carlo and Rome than anybody else in the history of the sport.
Nadal's career win-loss record on clay is 254-19 (a 93.04 winning percentage)
Nadal's win-loss record on clay since the start of 2005 is 228-9 (a 96.20 winning percentage)
Nadal's win-loss record on clay since the 11th April 2005 is 214-7 (a 96.83 winning percentage)
It's simply staggering that Nadal had a career win-loss record of 40-12 on the 11th April 2005, and now it's 254-19.