Mike Tyson: Federer 'is the GOAT'

Former heavyweight boxing champion Mike Tyson heaped praise on Roger Federer in a recent interview, calling the 36-year-old Swiss the greatest tennis player of all time.

"It's fantastic that he plays at this level at this age," Tyson told Blick, according to Aaron Stokes of Express.co.uk. "His record at the beginning of the year was impressive, unfortunately, he lost two matches in Indian Wells and Miami. And now he has stopped (for the clay season). A good decision, I think. He can afford it. He is the greatest of all time."

Tyson is also a big fan of Novak Djokovic, whom his 9-year-old daughter Milan, a budding tennis star, got to warm up with at the Indian Wells Masters last month.

"He is my favorite at the moment," Tyson said. "If he is okay, I really like to watch him."