Nadal improved to a career-best 17-1 on the year, including 14 straight match wins. He's won three titles — two on clay while runner-up in another on his favourite surface — since returning from a left knee injury.
Indian Wells is his first hard-court title since Tokyo in October 2010, having lost in six previous finals on the surface. He won his 600th career match and will move to No. 4 in the rankings released Monday.
Nadal broke a tie with Roger Federer with his record 22nd career ATP Tour Masters 1000 title.