@donaldyoungjr picks up a huge win at the @citiopen, defeating S. Wawrinka 6-4, 6-7, 7-6 in a marathon under the lights. Give Donald some 👏 for stepping up in the biggest moments of the match! _ #usta #ustennis #donaldyoung #citiopen #atp #tennis #protennis #instatennis #instasports