Tearful Federer and Nadal farewell goes viral

The tennis greats couldn't contain their emotions at the Laver Cup

A clip of Roger Federer and Rafael Nadal in tears during Federer's professional farewell to tennis has gone viral after being seen by 17 million social media users.

The 41-year-old had announced that he would be stepping away from the sport in a professional capacity after Friday's Laver Cup, and later revealed it would be a