Where Wayne Gretzky ranked Roger Federer among the greatest athletes in history in 2017

Roger Federer enjoyed one of the best seasons of his career in 2017, winning two Grand Slam titles. The Swiss maestro, who went on to win 20 Grand Slam titles before his retirement in 2022, defeated Rafael Nadal in the Australian Open final and Marin Cilic in the Wimbledon showpiece event.