Serena Williams criticizes 'grueling' anti-doping process ahead of Wimbledon return

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Serena Williams will participate in women’s singles at Wimbledon for the first time since 2022, entering the tournament as a wild card entrant. She’s also in the doubles event with her sister, Venus, for the first time since 2016.

The road to get back to professional tennis was a long one. Williams had to go back into the anti-doping pool. When asked about the process on Sunday, the 44-year-old tennis legend called the system "unprofessional" and "unreasonable."

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Serena Williams of the United States arrives to practice one day before the start of the Wimbledon Tennis Championships in London on June 28, 2026. (Kin Cheung/Associated Press)

"It’s grueling. They changed the rules now. I didn’t know some of the rules. So apparently if you miss a test outside of your window, it still counts as missed. I’m like, I guess I can’t go pick up my kids," she said. "It’s unprofessional. I hate it. I think it’s necessary, but I think a lot of the stuff, if I want to go places outside of my window, I should be able to go without having it count as a missed test."

The International Tennis Integrity Agency (ITIA) requires players to provide their daily "whereabouts" for no-notice testing. It’s a feature that has come under much scrutiny over the last few weeks.

Marketa Vondrousova, the 2023 Wimbledon champion, was suspended for four years for refusing an anti-doping test.

Williams called the process "unreasonable."

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Serena Williams of the United States smiles after a training session at the All England Lawn Tennis and