The world now knows the name Frances Tiafoe after the Hyattsville native upset tennis legend Rafael Nadal at the US Open Championship. WTOP’s Dave Johnson tells us how Tiafoe made it to the top of the tennis world. And we take a trip to where Tiafoe’s tennis career began in Prince George’s County. WTOP’s John Domen brings us to the Junior Tennis Champions Center in College Park where his former coach and friends aren’t that surprised by his win against Nadal.