Rafa Reigns Supreme! For the 4th time in his career, @rafaelnadal finishes as the year-end World No. 1️⃣! In addition to Rafa hoisting his 3rd #USOpen 🏆 this year, what were some of your favorite Rafa memories from this season? _ #tennis #rafaelnadal #grandslam #atp #worldno1 #instatennis #instawow #vamosrafa #atpworldtour