Frances Tiafoe returns a shot against Konstanin Kravchuk of Russia during Day 4 of the Miami Open at Crandon Park Tennis Center on March 23, 2017 in Key Biscayne, Florida.
Frances Tiafoe returns a shot against Konstanin Kravchuk of Russia during Day 4 of the Miami Open at Crandon Park Tennis Center on March 23, 2017 in Key Biscayne, Florida. Al Bello Getty Images
Frances Tiafoe returns a shot against Konstanin Kravchuk of Russia during Day 4 of the Miami Open at Crandon Park Tennis Center on March 23, 2017 in Key Biscayne, Florida. Al Bello Getty Images

Tiafoe has unlikely journey to Miami Open match vs. Federer

March 23, 2017 09:09 PM

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