How well do the players know their tennis history? 🧠

ATP players are challenged to recite all of the former World No. 1 players. Featuring Gael Monfils, Grigor Dimitrov, Frances Tiafoe, and more. Stay tuned for Part 2 👀 SUBSCRIBE: http://bit.ly/2dj6EhW WEBSITE: http://www.atptour.com/ FACEBOOK:   / atptour   TWITTER:   / atptour   INSTAGRAM:   / atptour   About the Official ATP Tour YouTube Channel: As the global governing body of men’s professional tennis, the ATP’s mission is to serve tennis. We entertain a billion global fans, showcase the world’s greatest players at the most prestigious tournaments, and inspire the next generation.