Serena Williams has withdrawn from the Miami Open due to a left knee injury.
The eight-time champion was forced to hand a walkover to China’s Wang Qiang in the third round of the tournament.
It's the second consecutive WTA event the 37-year-old Serena has had to withdraw from.
She recently retired from the tournament in Indian Wells due to a viral illness.
Serena is yet to win a title since returning from maternity leave last year.

UAE hold Qatar to top Gulf Cup Group B
Gill smashes fastest ODI double century as India beat West Indies
UAE Cup winner Carruthers takes Abu Dhabi Challenge lead
2027 London Marathon dates decided by game of rock-paper-scissors
Lamine nets double as Spain win again, England beat 10-man Czechs
