Andy Murray's 4:05 am finish eventually caught up with him at the Australian Open as the Briton bowed out in typically defiant style to Roberto Bautista Agut in round three on Saturday.The 35-year-old Murray was clearly feeling the effects of his epic five-setter in round two, which started on Thursday but ended in the early hours of Friday.The 24th-seeded Spaniard Bautista won 6-1, 6-7 (7/9), 6-3, 6-4 and faces unseeded Tommy Paul of the United States in the last 16.Former world number one Murray, who has a metal hip following career-saving surgery four years ago, was 3-0 down in a flash in the first set.But the three-time Grand Slam champion had Margaret Court Arena firmly in his corner and a huge cheer went up when he finally got on the board, holding serve for 3-1.It was to be only a temporary reprieve as the Spaniard raced away with the first set in a lopsided 29 minutes.Murray held serve to start the second set but he appeared sluggish, having been forced to five sets in both his previous matches.The epic five-setter in round two against Australia's Thanasi Kokkinakis lasted a gruelling five hours and 45 minutes -- the longest match of Murray's storied career.He committed a double fault to go 2-1 behind in the second set to Bautista, Murray letting out a howl of frustration.Five-time Australian Open runner-up Murray has made a career of dramatic comebacks and he threatened one again as he broke back for 4-4, to the delight of the crowd.Murray does not know when to quit.His opponent then had two set points in the second-set tie break, only for Murray to roar back to win 9-7 and claim the set.Bautista got the break to claim the third set, but Murray would not go away in the fourth, even as the match stretched past