Former world No. 1 Rafael Nadal displayed more signs of a return to top form with a ruthless 6-2, 6-1 hammering of Stan Wawrinka and was joined by Novak Djokovic in the Shanghai Masters semifinals on Friday.

World No. 1 Djokovic, twice champion in Shanghai, was tested by Australian Bernard Tomic before winning 7-6 (7-6), 6-1 to stay on course for a ninth title of the year having picked up his eighth last week in Beijing.

Nadal, a winner of 14 Grand Slam titles, suffered a second-round defeat by Dustin Brown at Wimbledon and was ousted in the U.S. Open third round by Fabio Fognini but has enjoyed a resurgence since arriving in China.