MELBOURNE, Australia —
In the 12th game of the fourth set, Federer appeared to yell across the net after Murray stopped momentarily behind the baseline during the rally.
Murray shrugged it off and seemed to dig in. He'd won that point but lost the game and was taken to another tiebreaker, which he lost.
"We were just checking each other out for bit," Federer said. "That wasn't a big deal for me — I hope not for him."
Murray said "stuff like that happens daily in tennis," and added that it was "very, very mild in comparison to what happens in other sports."
When Federer got break point with Murray serving for the match at 6-5, the applause was so prolonged Murray had to wait to serve. And when Federer got the break to force a tiebreaker, the crowd stood and roared as Murray slammed a ball into the court in anger.
The crowd cheered for every Murray error in tiebreaker. One man yelled, "Andy, don't choke."
Rather than wilting under the pressure in the fifth set, Murray hit his stride. He allowed Federer only four points in the first three games of the fifth set, bolting to a 3-0 lead and carrying it through to the end.
"It's big. I never beat Roger in a Slam before. It definitely will help with the confidence," Murray said. "Just knowing you can win against those guys in big matches definitely helps."
Federer could see improvement in Murray's approach in the tough situations.
"With the win at the Olympics and the U.S. Open, maybe there's just a little bit more belief," Federer said. "Or he's a bit more calm overall."