Del Potro beats Zverev in Shanghai
Juan Martin del Potro fought back from a set down to beat Germany's Alexander Zverev and reach the Shanghai Masters quarter-finals on Thursday. The seasoned Argentine recovered to win 3-6, 7-6, 6-4 in one hour, 55 minutes against the 20-year-old Zverev and will next play either Viktor Troicki or John Isner. Zverev was going after his sixth title of an outstanding season and was comfortable in the first set against del Potro. The pair went toe to toe in the second set and the tie break was just as tight until del Potro grabbed the crucial mini-break. Zverev yielded the crucial service break to go 3-2 down in the third set ad nevr recovered.