Del Potro advances to quarterfinals
Juan Martin del Potro fought back to beat racquet-smashing Alexander Zverev and Rafael Nadal blew away Fabio Fognini to reach the Shanghai Masters quarter-finals on Thursday.
Gutsy Del Potro recovered from a set down to win 3-6 7-6 (7/5) 6-4 against rising star Zverev and will next play Viktor Troicki or John Isner.
World number one Nadal plays sixth seed Grigor Dimitrov as he pursues one of the few tournaments to have eluded him.
The 20-year-old Zverev was going after his sixth title of a breakthrough season and was comfortable in the first set against Argentine Del Potro, the 2009 US Open champion and 16th seed.