INCREDIBLE. Kei Nishikori comes back from two sets and a break down and from 5-8 down in the 5th set match tiebreak to beat Pablo Carreño Busta 6-7(8), 4-6, 7-6(4), 6-4, 7-6(10-8) in 5h06 (!!!!!!!) and reach the QFs at the #AusOpen for the 4th time.

RIDICULOUS MATCH pic.twitter.com/4a36o9QoKv

— José Morgado (@josemorgado) January 21, 2019