HONG KONG (Reuters) - U.S. Open champion Bianca Andreescu has withdrawn from the WTA Finals in Shenzhen, citing the knee injury sustained in her defeat by Karolina Pliskova as the reason for pulling out of the season-ending championships.
The Canadian suffered the injury three games into her meeting with Pliskova, and although she continued with a heavily strapped knee until the end of the first set, the 19-year-old was eventually forced to retire.
