U.S. Open champion Bianca Andreescu announced early Saturday that she is pulling out of the Australian Open because of a knee injury.

She suffered the injury in the finals of the WTA Finals in Shenzhen, China, in October.

"My rehab is going well, I feel better and stronger every day but after discussing it with my team and following the recommendation of the doctors, the Australian Open is unfortunately too soon in my rehab process and I sadly will not be able to play in it this year," she wrote on Twitter. "It was a very tough decision to make as I love to play in Melbourne but I have to respect the recuperation plan for my knee and body."

The Australian Open begins Jan. 20.

The 19-year-old Canadian began her breakthrough 2019 season by losing in the Auckland final to Germany's Julia Goerges. She won three singles titles in 2019, including her memorable straight-sets win over Serena Williams in the U.S. Open to claim her first Grand Slam championship.

Andreescu also won titles at Indian Wells, Calif., and Toronto.

--Field Level Media

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