Staying peRFect in 🇨🇭Basel: @rogerfederer defeats Struff 6-3, 7-5 to reach the QF of his hometown event at the @swissindoorsbasel_official! 📸: 2018 #USOpen. _ #tennis #instatennis #rogerfederer #atpworldtour #basel #swisstennis #instasport