TORONTO, ON - AUGUST 11: Karen Khachanov of Russia plays a shot against Rafael Nadal of Spain during a semi final match on Day 6 of the Rogers Cup at Aviva Centre on August 11, 2018 in Toronto, Canada. (Photo by Vaughn Ridley/Getty Images)
TORONTO, ON - AUGUST 11: Karen Khachanov of Russia plays a shot against Rafael Nadal of Spain during a semi final match on Day 6 of the Rogers Cup at Aviva Centre on August 11, 2018 in Toronto, Canada. (Photo by Vaughn Ridley/Getty Images)