Ben Shelton's Australian Open quarterfinal foe, Lorenzo Sonego, produced the shot of the tournament — diving to his left for a volley with so much spin that the ball bounced on one side of the net, then floated back over to the other — but it was the American who ended up with the victory Wednesday.

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 battled to a four-set win over Lorenzo Sonego to reach his second grand slam semi-final. The big-serving American made his breakthrough at the Australian Open two years ago with a run to the quarter-finals on his debut before bettering that at the US Open.

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

The big-serving American 21st seed will face either defending champion Jannik Sinner or Australia’s Alex de Minaur for a place in the final at Park.

Ben Shelton's Australian Open quarterfinal foe, Lorenzo Sonego, produced the shot of the tournament — diving to his left for a volley with so much spin that the ball bounced on one side of the net, then floated back over to the other — but it was the American who ended up with the victory Wednesday.