Tiafoe defeats Rublev to make it to US Open semifinals

Tiafoe, aiming to become the first African-American man to win the US Open since Arthur Ashe in 1968, put on a scintillating performance to defeat Russian ninth seed Rublev 7-6 (7/3), 7-6 (7/0), 6-4 in 2 hours and 36 minutes.