Federer cracks up crowd with funny call about crying baby

Roger Federer had Rod Laver Arena laughing during his first round victory at the Australian Open with a brilliant reaction to a crying baby in the crowd.

Federer continued the longest first-round winning streak in tennis on Tuesday night, easing past Slovenian Aljaz Bedene to make it 19 successive tournament-opening wins at the Australian Open.

The world No.2 and title favourite went unbroken in his 6-3 6-4 6-3 win on Rod Laver Arena in just one hour and 39 minutes.

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Bedene was preparing to serve midway through the third set on Tuesday night when a young fan put him off.

The baby let out a cry that reverberated around Rod Laver Arena, making Bedene stop his service motion.

However the crowd wouldn't have been expecting Federer's reaction.

Roger even had wife Mirka laughing. Image: Channel 7

"It's not mine," he simply said, assuring the crowd that the offending child wasn't one of his own.

The Swiss legend has his four children with him Down Under this year, marking the first time all four of them have travelled with him to Australia.

His parents also travelled with him, attending his match on Tuesday night.

Federer recently paid a touching tribute to his wife Mirka, as well as three-year-old sons Leo and Lenny, and eight-year-old daughters Myla Rose and Charlene Riva, also identical twins.

"In my vision, I never had this, that I was going to be playing tennis with four kids. That was not part of my dream," he said last week.

"My dream was hopefully holding up a trophy of some kind, my home-town tournament in Basel or a Wimbledon trophy or being world No.1 of the ATP.

Mirka and the kids. Image: Getty

"That was my sort of dream, not the kids bit.

"Family was something I always wanted when I got together with Mirka, way back when in Sydney at the Olympics in 2000, and my whole life changed completely and it's the best thing that ever happened to me.

"So this phase now, the last eight years have just been the best."

with AAP