Serena Williams, met haar 44 jaar de jongste van het tweetal, kampte dinsdag na haar optreden in het enkelspel tegen Maya Joint met knieklachten.

Serena received wild card invitations from Wimbledon organizers to play both singles and doubles with Venus.

Serena Williams, 44, did not ask for medical treatment during a 6-3 6-7 (6) 6-3 loss to 20-year-old Maya Joint of Australia in the first round on Tuesday. | Tennis News