The tennis legend is now reportedly a billionaire and joins the likes of LeBron James and Lionel Messi, who have leveraged their success in their respective sport to the next level. According to Forbes, Federer's net worth boost is due to the "significant minority stake in publicly traded Swiss shoe and apparel brand On."

Justin Birnbaum of Forbes reported Friday the publication estimates Federer's net worth to be $1.1 billion. That makes him one of seven athletes to reach such billionaire status and puts him alongside some of the most notable names in sports history: There is no doubt Federer made some of his fortune on the tennis court.

In fact, Federer became the second tennis player after Tiriac to join the club. Despite bidding adieu to the game three years before, Federer's net worth was boosted by his minority stake in Swiss shoe and apparel brand On.