[CR129] Alexander Zverev (GER) is on to the second round. Today he defeated [CR69] Sam Groth (AUS) in his ATP Masters 1000 debut. It was a hard-fought three set encounter, with the teenager finally prevailing 7-5, 6-7(5), 6-4. Zverev proved that he was up to this first round challenge, serving more aces than his opponent and saving all break points faced. He wants it known that he belongs on the big stage. His next opponent will be the enigmatic [CR30] Lukas Rosol (CZE). Can Zverev maintain his composure and upset the Czech? Rosol has not been as confident of late and this may be the perfect opportunity for the teenager to make it to the third round of his first ATP Masters 1000 event.