PeRFect start for Roger #Federer in London Masters! Beats Paris Champion Jack Sock 6-4 7-6 #ATPFinals pic.twitter.com/3b381IlQti — We Are Tennis (@WeAreTennis) November 12, 2017Alexander Zverev's #NittoATPFinals debut is a memorable one! He outlasts Cilic 6-4, 3-6, 6-4 in his opening match in Group Boris Becker.#USOpen pic.twitter.com/oUFy1RxsI3 — US Open Tennis (@usopen) November 12, 2017
