Frances Tiafoe, 24, is the youngest American man to reach the US Open quarterfinals since Andy Roddick in 2006.Click Here to Visit Orignal Source of Article https://www.espn.com/tennis/story/_/id/34531002/american-frances-tiafoe-stuns-rafael-nadal-make-us-open-quarterfinals
Tiafoe stuns Nadal to make US Open quarters
