Serena says she won't reconsider retirement but 'you never know'

Serena Williams said Friday that she will not reconsider her decision to retire from tennis, but added: "You never know".

Williams suffered what was almost certainly a career-ending defeat when she was knocked out of the US Open by Australia's Ajla Tomljanovic.

"Will you reconsider?" a tearful Williams was asked on court.

"I don't think so, but you never know."

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