Just over a month after winning the U.S. Open in September 2019, things changed in a big way for Canadian tennis star Bianca Andreescu. A knee injury suffered in October 2019 began a 15-month inactive stretch that is set to end when Andreescu plays her first match at the Australian Open, which starts Monday (Sunday night in Canada). Here is a look at what's transpired for Andreescu since the day she hurt her left knee in China: Oct. 30, 2019: Andreescu is eliminated from championship contention at the WTA Finals in Shenzhen, China when she retires from a match against Karolina Pliskova with a knee injury.