Rafael Nadal finally won another clay-court title, although not in a manner that alleviated any concerns about his recent form on his favorite surface. The top-ranked Spaniard won his fourth Madrid Open on Sunday after Kei Nishikori was forced to withdraw with a hip injury when trailing 2-6, 6-4, 3-0 in the final. And Nadal, who is coming off to uncharacteristic quarterfinal losses on clay, said his mental strength is still lacking just two weeks ahead of the French Open. ''It wasn't that I didn't want to play or I was missing intensity, I was just mentally blocked.'' Earlier, Maria Sharapova bounced back from a poor start to defeat Simona Halep 1-6, 6-2, 6-3 to win the women's title. More...