Rafael Nadal defeated which 19-time Grand Slam titlist in the 2008 French Open for his fourth straight clay major title?
2008 French Open – Men's Singles Rafael Nadal was the 3-time defending champion and retained his title, defeating Roger Federer in the final 6–1, 6–3, 6–0. This was Federer's worst loss in a Grand Slam event in his entire
2011 US Open – Men's Singles Rafael Nadal was the defending champion, but was defeated in the final by Novak Djokovic with a score of 6–2, 6–4, 6–7, 6–1 in a rematch of the 2010 final. Djokovic claimed his first US Open title, his third Grand Slam of the year, and his fourth Grand Slam overall.