Canadian tennis player Victoria Mboko withdraws from the National Bank Open presented by Rogers because of a knee injury, according to multiple Canadian outlets. Mboko, who is listed as world No. 10 and is from Burlington, Ontario, has not played a competitive match since an incident on court last month at the HSBC Championships. Reports say she injured the medial collateral ligament in her left knee when she fell during play. As a result, she is unable to participate in the National Bank Open, which begins shortly. One outlet identifies the withdrawal as taking place on the eve of the tournament, citing the need to recover from the ligament injury. While the coverage focuses on the injury and her absence from the event, details about her return timeline are not provided in the available summaries. The withdrawal means Mboko will miss the National Bank Open and any matches she would have been scheduled to play there.