Serena Williams and her sister Venus Williams are listed on the schedule for Saturday's play at Wimbledon, but Serena's participation in the women's doubles match is uncertain as she is dealing with a knee injury.

Serena, 44, returned to Wimbledon for the first time in four years and lost her first-round singles match to Maya Joint. She did not appear for her post-match press conference, with the reason later revealed to be a knee injury suffered during that singles match. This injury had cast doubt on her planned doubles participation with Venus, with whom she has won the event six times.

The first round of the women's doubles was set to conclude on Friday, but the Williams sisters were not included on the day's order of play. Tournament director Jamie Baker stated that Wimbledon would give Serena "as much time as possible" to recover.

Their scheduled match against Solana Sierra and Camila Osorio on Saturday is listed as "to be arranged," suggesting Wimbledon intends to schedule it on Centre Court or No. 1 Court, depending on which matches finish first. This indicates that Serena and her team believe there is a possibility of her being fit to play, though she could still withdraw before the match begins.

Meanwhile, Venus Williams, 46, faces a potential fine from the All England Club after declining to attend a mandatory media session following her mixed doubles defeat on Friday with German partner Kevin Krawietz. Fines for first-week incidents are expected to be released over the weekend.