Nadal wears down Khachanov in epic
World No 1 and defending US Open champion Rafael Nadal was forced to stave off Russia’s Karen Khachanov in four spellbinding sets to reach the last 16 on Friday.
Source: http://www.skysports.com/tennis/news/12040/11487033/rafael-nadal-defeats-karen-khachanov-in-us-open-classic-to-reach-fourth-round