Ben Shelton has never been to a Grand Slam final, but he'll have to beat the No. 1 tennis player in the world to get there.

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.

Learner Tien (No. 121) will meet Lorenzo Sonego (No. 55) in the Round of 16 at the Australian Open on Sunday,9.Sonego defeated Fabian Marozsan 6-7, 7-6, 6-1, 6-2 on Friday in the Round

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

All-action Ben Shelton battled past stubborn Italian Lorenzo Sonego 6-4, 7-5, 4-6, 7-6 (7/4) on Wednesday to reach his first Australian Open semi-final.

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.