'Stick to your day jobs': Federer and Dimitrov's awful karaoke

Roger Federer, Grigor Dimtrov and Tommy Haas won't be moving into the world of singing anytime soon if this karaoke video is anything to go by.

During Saturday's Australian Open coverage, the clip was shown ahead of Rafael Nadal's third round clash with Alexander Zverev.

As you can see in the video above, Dimitrov, Haas and Federer do their best to absolutely murder Chicago's iconic 70's song 'Hard to Say I'm Sorry'.

Dimitrov and Federer at last year's Australian Open. Image: Getty

One of the tennis stars sounds horribly out of tune (we suspect Dimitrov).

"Don't quit your day jobs," John Fitzgerald said in commentary after seeing the clip.

"Do you know who was out of tune?" he then asked Courier.

"Not sure," the American former world No.1. "And even if I did I wouldn't say."

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