Federer and Nadal's career statistics from 2003 to 2013 are compared in the document. Over this period: - Federer won 49 titles compared to Nadal's 55, but Nadal won more Grand Slam singles titles, 12 to Federer's 11. - Nadal had a higher winning percentage than Federer, with his peak at 82.71% in 2008 compared to Federer's highest of 82.63% in 2009. - While Federer had more Masters 1000 titles, Nadal led in runner-up finishes at these events and the ATP World Tour Finals.