4 Grand Slams 🏆🏆🏆🏆 Number 1 and 2 in the @atpworldtour rankings... it was all about @rogerfederer and @rafaelnadal in our 2017 #2017bestnine. Who will have the better 2018? 🇪🇸 or 🇨🇭? _ #atp #tennis #2017 #rogerfederer #rafanadal #instatennis #bestof2017 #usopen