Marin Cilic defeated 19-year-old Australian Alex de Minaur 4-6, 3-6, 6-3, 6-4, 7-5 to reach the US Open last 16 on Sunday morning in the second ever latest finish at the tournament.Cilic, the 2014 champion, needed eight match points to defeat the world number 45 in a four-hour tie which ended at 2.22 local time (0622GMT), just four minutes short of the record for the latest finish in New