50 Moments That Mattered: Less than a year after surgery and playing in only her 5th event since returning to the tour, @sloanestephens staged one of the most unlikely runs to a US Open women's singles title in the tournament's history! #USOpen50. _ #USOpen #grandslam #tennis #instatennis #sloanestephens #flushingmeadows #champion #wta #protennis #styleandgrace #tennispro