Nick Kyrgios pulls out of Australian Open with injured knee


              Australia's Nick Kyrgios wipes sweat from his face during an exhibition match against Serbia's Novak Djokovic on Rod Laver Arena ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 13, 2023. (AP Photo/Mark Baker)
            
              Australia's Nick Kyrgios reacts as he announces his withdrawal from the Australian Open with a knee injury at a press conference in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Mark Baker)
            
              Australia's Nick Kyrgios reacts as he announces his withdrawal from the Australian Open with a knee injury at a press conference in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Mark Baker)
            
              Australia's Nick Kyrgios, left, and Serbia's Novak Djokovic shake hands following an exhibition match on Rod Laver Arena ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 13, 2023. (AP Photo/Mark Baker)
Nick Kyrgios pulls out of Australian Open with injured knee