Australian Open semifinals are set. Wednesday's matches finalized the opponents, and there is one American left standing in men's singles: 22-year-old Ben Shelton. Shelton, the No. 21 seed, won a grueling quarterfinal against unseeded Cinderella Lorenzo Sonego,

Ben Shelton has reached his first Australian Open semifinal by defeating Lorenzo Sonego 6-4, 7-5, 4-6, 7-6 in an entertaining match.

Watch Lorenzo Sonego deliver the shot of the year in his thrilling quarter-final against Ben Shelton at the Australian Open Day 11. A match not to be missed