Serena Williams will do everything to be ready for her Wimbledon doubles campaign alongside older sister Venus after sustaining a knee injury during her opening singles defeat on Tuesday, the American’s agent said, according to Reuters.

The 44-year-old’s highly anticipated comeback to competitive action after four years away ended in disappointment after a 6-3 6-7(6) 6-3 defeat to little-known Australian Maya Joint, and she later skipped her mandatory post-match press conference.

British media reported the 23-times Grand Slam champion was not fined for her absence because she was injured, with the focus now shifting to her doubles commitments this week after she received a wild card to compete with Venus.

The Williams sisters are drawn to play Solana Sierra and Camila Osorio in the opening ro