TORONTO, ON - AUGUST 09: Frances Tiafoe (USA) returns the ball during his third round match of the Rogers Cup tennis tournament on August 9, 2018, at Aviva Centre in Toronto, ON, Canada. (Photograph by Julian Avram/Icon Sportswire via Getty Images)
TORONTO, ON - AUGUST 09: Frances Tiafoe (USA) returns the ball during his third round match of the Rogers Cup tennis tournament on August 9, 2018, at Aviva Centre in Toronto, ON, Canada. (Photograph by Julian Avram/Icon Sportswire via Getty Images)