Serena Williams withdraws from Miami Open with knee injury

Mar 22, 2019; Miami Gardens, FL, USA; Serena Williams of the United States reacts against Rebecca Peterson of Sweden (not pictured) in the second round of the Miami Open at Miami Open Tennis Complex. Mandatory Credit: Geoff Burke-USA TODAY Sports

(Reuters) - Serena Williams has withdrawn from the Miami Open with a left knee injury, tournament officials said on Saturday.

It is the second consecutive WTA event in which the American has been unable to continue, after her retirement from last week's tournament in Indian Wells with a viral illness.