(Reuters) - Former world number one Rafa Nadal says regaining control of his emotions has sparked a resurgence that continued on Thursday when he reached the Shanghai Masters quarter-finals with victory against Canadian Milos Raonic.
Nadal, seeded eighth, has won three titles this year but the Spaniard has struggled to find the form that earned him 14 grand slam titles.
He suffered a crushing second-round defeat by Dustin Brown at Wimbledon and followed that with a third-round exit at the U.S. Open to Fabio Fognini, but since arriving in China the 29-year-old has looked more like his old self.