Frances Tiafoe stuns Rafael Nadal in four sets to reach US Open quarter-finals

• American prevails 6-4, 4-6, 6-4, 6-3 to reach quarter-finals
• Biggest win of Tiafoe's career sets up tie against Andrey Rublev

Frances Tiafoe took an enormous step towards fulfilling his great potential as he pulled off by far the biggest win of his career, upsetting the second seed Rafael Nadal 6-4, 4-6, 6-4, 6-3 to reach the US Open quarter-finals for the first time.

In front of a rowdy home crowd at Arthur Ashe Stadium, the 22nd seed became the first man to beat Nadal on court in a grand slam this year. It also marks the first time since Wimbledon 2017 that Nadal has lost before the quarter-final stage of a grand slam.