Postpublished at 12:16 GMT 14 January 2019
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Murray takes a few deep breaths after watching the video from the players, while the Melbourne Arena crowd give him another standing ovation.

Britain's Andy Murray loses five-set epic to Roberto Bautista Agut at Australian Open
Spaniard Bautista Agut wins 6-4 6-4 6-7 (5-7) 6-7 (4-7) 6-2
Epic first-round match could be Murray's last because of hip injury
But he tells fans 'Maybe I'll see you again. I'll do everything possible to try'
Kyle Edmund loses 6-3 6-0 7-5 to Tomas Berdych, Dan Evans wins but Cameron Norrie goes out
Katie Boulter makes second round but Harriet Dart and Heather Watson are out
Federer, Nadal, Wozniacki and Kerber all win on day one
Amy Lofthouse
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Murray takes a few deep breaths after watching the video from the players, while the Melbourne Arena crowd give him another standing ovation.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
More from Andy Murray: "Maybe I'll see you again. I'll do everything possible to try.
"If I want to go again, I'll need to have a big operation, which there's no guarantee I'll be able to come back from anyway, but I'll give it my best shot."
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
They're now showing Murray a montage on the big screen of his peers congratulating him on his career.
Lots of WTA players thanking him for the way he has stood up for women's tennis over the years, which is very touching to see.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Andy Murray, speaking on court: "I've loved playing here over the years. It's an amazing place to play tennis. If this was my last match then an amazing way to end. I gave everything I had. It wasn't enough tonight.
"Thanks again. Thanks to everyone for all of the support - my team, my family, and everyone who has contributed to my career."
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Andy Murray has stayed on court to speak to the crowd.
Jonathan Jurejko
BBC Sport at Melbourne Park
Wow. Andy Murray defies logic again. He defies expectation again. If this is it then what a way to go...
He slings his racquet into his chair, He slumps in his seat. He couldn't fight any more.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
In his winner's speech, Roberto Bautista Agut thanks Andy Murray for all he's done for tennis.
"He deserved an atmosphere like this," he says.
Up next for the Spaniard is Australia's John Millman.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Andy Murray struggles to put his socks on without any pain.
He's gone through surgery, rehabilitation, a drop in the rankings and still he went on to the bitter end.
It's been a match that sums up all of Murray's career. What a gem.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Andy Murray drops into his chair, looking absolutely exhausted.
He stands up to acknowledge the crowd, who are all on their feet, as mum Judy wipes away a few tears.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-6 Bautista Agut
Roberto Bautista Agut celebrates, then instantly climbs over the net to hug Andy Murray.
What a match.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-5 Bautista Agut*
Murray gets the luck of the net a few times, but in the end, Bautista Agut is there to put away the smash.
Three match points, after an utterly epic four hours.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-5 Bautista Agut*
Andy Murray looks like he might hit his hip in frustration, then thinks better of it.
His first two service returns find the net. 30-0 to Bautista Agut.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-5 Bautista Agut*
Here we go.
David Law
BBC Radio 5 live tennis commentator at Melbourne Park
If this is the end, what a way to go for Andy Murray.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-5 Bautista Agut*
If that was Andy Murray's last service game in a Grand Slam, then it's not a bad one to go out on.
Ace. Winner. Ace. Saving match point.
Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 2-5 Bautista Agut*
And that'll be an ace from Andy Murray.
He clenches his fist and looks up to the sky as the Melbourne Arena erupts again.
Roberto Bautista Agut will have to serve this one out.
*Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 1-5 Bautista Agut
Now then.
An on the strech Bautista Agut nets a forehand, and it's advantage Murray...
*Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 1-5 Bautista Agut
And still, Andy Murray keeps going!
There's a huge smile on Judy's face as he hangs in a rally, before somehow finding the energy to move forward and volley a winner.
Deuce.
*Murray 4-6 4-6 7-6 (7-5) 7-6 (7-4) 1-5 Bautista Agut
Murray puffs out his cheeks. Another ovation from the crowd.
Jonathan Jurejko
BBC Sport at Melbourne Park
That standing ovation was almost like an encore at a concert. The crowd begging Murray for more. One last song.
Murray looked emotional on the baseline. Is that it?