VIDEO: It's hilarious! Roger Federer's reaction while watching Maria Sharapova's match

Melbourne: Minutes before he headed towards his 300th Grand Slam victory, Swiss legend Roger Federer was watching Maria Sharapova's match against Lauren Devis.

In a hilarious video, the 17-time Major champion can be seen sitting next to the Bulgarian Grigor Dimitrov – whom he beat later to achieve the milestone – watching the match and his reaction is a delight to tennis fans.

Here is the video:

Here's the full video of Federer and Dimitrov watching the Sharapova-Davis match before they got on court https://t.co/FKco39W36Y #ausopen — Reem Abulleil (@ReemAbulleil) January 22, 2016

Federer on Friday became the only male tennis player ever to win 300 Grand Slam matches.

The four-time Australian Open champion got the better of Dimitrov with a 6-4, 3-6, 6-1, 6-4 win in two hours, 40 minutes under the closed roof on Rod Laver Arena and he is now up against Belgium’s 15th seed David Goffin in the next round.