Serena Williams had a difficult draw in the first US Open warm-up competition.

Serena Williams will be unseeded at the National Bank Open in Toronto . The American will be playing in the first round of the tournament .

Serena Williams will have her work cut out for her when the Toronto Open starts next week, when the 23-time Grand Slam champion begins her hardcourt preparations for the forthcoming U.S. Open.Williams will face either Tokyo Olympics gold medalist Belinda Bencic or veteran and former world number one Victoria Azarenka in the second round if she progresses beyond a qualifier in her first round match.Iga Swiatek, the current world number one, Naomi Osaka, and Leylah Fernandez, a Canadian teen sensation, are among the Williams brutal quarters of the draw announced on Friday.This time around, the three-time winner of the tournament and a finalist as recently as 2019 will be unseeded.

On Aug. 8, the main draw of the National Bank Open in Toronto will begin, and Williams is then scheduled to compete at the Western and Southern Open in Cincinnati before heading to New York for the U.S. Open, which begins on Aug. 29.