Ben Shelton and Madison Keys achieved a joint milestone for American tennis at the Australian Open, one last accomplished by Andy Roddick and Serena Williams.

Ben Shelton advanced to the semi-final of the hard court major after beating Lorenzo Sonego 6-4, 7-5, 4-6, 7-6 (7-4) at the Rod Laver Arena on Wednesday.

Ben Shelton wore down Italian Lorenzo Sonego 6-4 7-5 4-6 7-6 (4) in a highlight-laden clash and ensured the US has players in the men's and women's semifinals for the first time since Andy Roddick and Serena Williams in 2009.

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 and Madison Keys became the first American man and woman to reach the Australian Open semifinals in the same year since 2009, with respective quarterfinal triumphs Wednesday in Melbourne.

A missed double-bounce call, an unseeded Italian hits one of the shots of his life and an all-Australian final is locked in. Here are five quick hits from day 11 of the Australian Open.

Just hours after securing his place in the Australian Open semifinals, American Ben Shelton took to social media to congratulate countrywoman Madison Keys.

Madison Keys is back into the Australian Open semifinals for a third time after her 3-6, 6-3, 6-4 win Wednesday over Elina Svitolina of Ukraine. The 29-year-old Keys is on a 10-match winning streak after warming up for the year's first major with a title at Adelaide, where she beat fellow American Jessica Pegula in the final.

Ben Shelton and Madison Keys became the first American man and woman to reach the Australian Open semifinals in the same year since 2009, with respective quarterfinal triumphs Wednesday in Melbourne.

MELBOURNE, Australia (AP) — 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.

The women’s semifinals will be Iga Swiatek of Poland against Madison Keys of the U.S ... victory over unseeded Lorenzo Sonego. Novak Djokovic and Alexander Zverev earned their berths in ...