Ben Shelton will face Grand Slam champion Novak Djokovic in his first major semifinal match. Shelton, 20, who is attempting to become the first American champion since 2003, is the subject of a lot of buzz. When analyzing the matchup, former world No. 1 Justine Henin suggested that Shelton, who has hit the tournament's fastest serve, should maintain a "carefree" attitude.

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Highlights: For the first time ever, Shelton and Muchova advance to the US Open semifinals.

According to Justine Henin, Novak Djokovic will need to show off his "legs and genius" if he wants to defeat the "carefree" Ben Shelton in the US Open semifinals.
In the quarterfinals, the 20-year-old Shelton defeated fellow American Frances Tiafoe, winning a four-set match against a player five years his senior.
Shelton has advanced to the quarterfinals of the Australian Open this year before falling to Tommy Paul in four sets, but he has now accomplished at least one more feat in New York.