Serena Williams explains mental game, art of a comeback

Serena Williams believes the game of tennis is 70% mental. As part of a new online learning experience called MasterClass, the World No. 1 explains how she gets

Serena Williams believes the game of tennis is 70% mental. As part of a new online learning experience called MasterClass, the World No. 1 explains how she gets in her opponent's head and digs deep to mount a comeback in tough situations.