Roger Federer leading a boy band featuring Grigor Dimitrov and Tommy Haas may have sounded like a good idea.
Or not. At least it's been tried.
Federer, the 17-time grand slam champion, along with Dimitrov - once nicknamed 'Baby Fed' - and Haas belted out a rendition of Chicago's 'Hard to Say I'm Sorry'.
Haas, likely with lyrics in hand, played the central role, with David Foster on the piano.
-- Roger Federer (@rogerfederer) January 21, 2017
The tennis trio has more than just ambitions to sing in common, with their one-handed backhands things of beauty.