Cilic, 34, was a French Open semi-finalist last year and ranked as high as third in the world.
Top seed Novak Djokovic battled past dangerous Canadian Denis Shapovalov with a high-octane performance Friday to set up an Adelaide International semi-final with former world number one Daniil Medvedev
Djokovic returned to the scene of his 2007 title run on Tuesday with a comfortable straight-sets win over France's Constant Lestienne
The pair of Karen Khachanov and Denis Shapovalov defeated Rohan Bopanna and Matwe Middelkoop 7-6 (8/6), 6-7 (12/14), 10-6 in the first round of the men's doubles at the Cincinnati Masters 2022.
Daniil Medvedev, who came into Paris with just one match on clay this year following hernia surgery, routed Argentina's 103rd-ranked Facundo Bagnis 6-2, 6-2, 6-2
An argument started between the umpire and Shapovalov and the player was jeered, which saw him lash out at the crowd.
The Spanish sixth seed edged the Canadian 14th seed 6-3, 6-4, 4-6, 3-6, 6-3 in 4hr 8min of thrilling action on Rod Laver Arena
Rafael Nadal survived a marathon first-set tiebreak to seal his spot in the quarter-finals of the Australian Open on Sunday and will face Denis Shapovalov.
World No.3 Alexander Zverev crashed out of the Australian Open on Sunday, losing in the men's singles fourth round to Canada's Denis Shapovalov.
Felix Auger-Aliassime and Denis Shapovalov stunned defending champions Russia Saturday in a decisive doubles rubber to send Canada storming into an ATP Cup final against Spain.