Roger Federer vs Rafael Nadal

Nadal won 24 Grand Slam titles compared to Federer's 20, and dominated their head-to-head record 24-16, but Federer achieved a higher career peak with 310 weeks at world No. 1 and won more Masters 1000 titles (37 vs 36). Nadal's clay court dominance and longevity into his late 30s defined his legacy, while Federer's versatility and artistry across all surfaces remain historically unmatched.