TORONTO, ON - AUGUST 09: Jan-Lennard Struff (GER) returns the ball during his National Bank Open tennis tournament first round game on August 9, 2021, at Aviva Centre in Toronto, ON, Canada. (Photo by Julian Avram/Icon Sportswire via Getty Images)
TORONTO, ON - AUGUST 09: Jan-Lennard Struff (GER) returns the ball during his National Bank Open tennis tournament first round game on August 9, 2021, at Aviva Centre in Toronto, ON, Canada. (Photo by Julian Avram/Icon Sportswire via Getty Images)