Roger Federer struggled to explain his feelings after coming back from the dead to beat John Millman 4-6, 7-6, 6-4, 4-6, 7-6 at the Australian Open.
The pair went all the way to a fifth-set Championship tiebreak in which the Swiss star came out on top after recovering from an 8-4 deficit.
The 38-year-old could not get his forehand going and made a gigantic 82 unforced errors which is completely out of character.
And the crowd was split in favour of both home favourite Millman and legendary superstar Federer, creating an electric atmosphere.
But it was the 20-time Grand Slam winner who used his experience to dig himself out of a huge hole and book his place in the fourth round.
“Oh God it was tough,” Federer said during his on-court interview. “Thank god it was a super tiebreak or else I would have lost this one.
“John played a great match and he should be out here doing the interview. I can’t even speak any more.
“It came down to the wire in the end and I just about got over the line.”
Federer and Millman battled for four hours and three minutes but the result and the match was wrapped up just before 1am local time (2pm GMT)
“I had to stay focused and make the right decision,” Federer added. “He kept coming out with the goods and I just had to stay in there.
“I was getting ready to explain myself in the press conference. The demons are always there lurking. It was a hell of a match and John deserves half of this one.
“I had to figure out a way to get him in trouble on his serve. He is not known to be the best server but he was doing such a nice job.
“I was struggling in the cross-court battles and it was just a matter of holding my own serve.”