An excellent Australian Open quarterfinal ends prematurely when @marincilic_official advances after Nadal retires due to injury at 3-6, 6-3, 6-7, 6-2, 2-0. Leave both men some ❤️ for leaving it on all the court for nearly four hours. 📸: #USOpen #usopen #marincilic #cilic #grandslam #melbourne #tennis #atp #protennis #instatennis #instasports