@petra.kvitova is in control. She takes the first set 7-6 over Muguruza and is one step closer to the QFs. Will Garbiñe counter? #USOpen (🎥 by @visualsbypierre ) #wta #tennis #instasport #arthurashestadium #petrakvitova #kvitova #instatennis #tiebreaker #tennisplayer