Serena Williams looked disoriented , she n't even serve . She said ' this illness ' makes it difficult to play . Following the warmup , a tournament doctor examined her on the bench , at one point taking her blood pressure . She 's been ill for months , " Venus Williams says . The Williams sisters have won three doubles titles at Wimbledon .
Serena Williams looked disoriented , she n't even serve . She said ' this illness ' makes it difficult to play . She 's been ill for months , " Venus Williams says . The Williams sisters have won three doubles titles at Wimbledon .