AO Top 5 Photos, 1/27: "Luckiest guy" Dylan Alcott closes historic chapter 

Dylan Alcott

"Thank you for making me feel worthy. I’m the luckiest guy in the world."

The Aussie may have lost to Sam Schröder in the final match of his career, but the 23-time Grand Slam champ walks away from the sport as a legend. He will undoubtedly continue to inspire.

Ashleigh Barty

The world No. 1 made it look easy out there on Rod Laver Arena. She's handling the pressure of playing at her home Slam extremely well and her 6-1, 6-3 scoreline over Madison Keys proves it. She's into her first Australian Open final.

Madison Keys

The American's 10-match winning streak came to an end against Barty, but what a terrific start to the season it was for Keys. Her semifinal appearance in Melbourne marked her first since 2015.

Kyrgios and Kokkinakis

Special K is through to the final round after moving past No. 3 seeds Horacio Zeballos and Marcel Granollers 7-6(4), 6-4. They will face now face countrymen Matt Ebden and Max Purcell in the first all-Australian men's doubles final since 1980.

Danielle Collins

The American was cracking winners from all areas of the court to grab a 6-4, 6-1 win over Iga Swiatek. She's into her first Grand Slam final and will make her Top 10 debut come Monday.