Serena Williams defeated ahead of Wimbledon return

Serena Williams and Karolina Muchova were beaten in the opening round of the Berlin Open, giving Williams a setback in her Wimbledon build-up. The result lands days before Wimbledon and adds pressure to her preparations as attention grows around a possible return at the All England Club. Kim Clijsters and Danielle Collins are among the voices feeding the wider debate around how ready Williams looks, while Venus Williams is also part of the Wimbledon conversation.