Naomi Osaka and Aslan Karatsev are the first through in their respective draws.
Novak Djokovic has beaten Alexander by 3 sets to 1 in their Australian Open quarter final in Melbourne.
The German sixth seed claimed the opening set in a tie-break, before Djokovic rallied to win the second set 6-2.
The reigning champ came back from 3 games to love down to win the third set and won another tie-break in the fourth to win the match.
Djokovic will face Russian qualifier Aslan Karatsev in the semi-finals, after the world number 114 defeated 16th seed Grigor Dimitrov of Belarus in four sets.
Meanwhile in the women's singles Serena Williams was in impressive form, defeating second seed Simona Halep 6-3 6-3.
She'll now face 2019 champion Naomi Osaka in what will be her 40th Grand Slam semi-final.
Offaly Boxer Serves Up ‘Boxer Bites' Series On Social Media
Portlaoise Panthers Secure Big Win In Super League
Athlone Town Confirm Departure Of Three Players
Kerry v Dublin - A Rivalry That Revived The GAA
Lane Family Toast National Title Clean Sweep
Leinster Secure Win Away To Munster
Portlaoise Panthers Suffer Another Division One Defeat
Offaly GAA Club Apply For New Pitch
Midlands Counties Learn Opening Round Opponents In Camogie League Campaign
Portlaoise Panthers Fall Short Against Trinity Meteors
Adam Maloney Joins Athlone Town On Loan
Midlands Winger Calls For Renewed Support Of Women's Game
Izuchukwu Pens New Ulster Deal
Midlands Darts Player Ready For 2026 Q School
Leinster Fight Back To See Off Ulster
Dan McKenna And Dylan Hand Depart Athlone Town
F1 Prospect Alex Dunne Brushes Off Media Speculation
Loughrea Ready To Appeal Late Red After All Ireland Semi-Final Success
Draw Made For U20 Championships