Serena Williams and Emma Raducanu's match has been rescheduled for Tuesday at the Western & Southern Open

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The first-round match between retiring Serena Williams

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and Emma Raducanu has been postponed to Tuesday at the

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Western and Southern Open "because of various booking factors," the competition declared late Sunday.

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Williams, 40, and Raducanu, 19, were originally scheduled to play

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Monday night, but there were several rain delays on Sunday.

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Williams as of late declared her retirement.

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"I think it will be an exciting match," Radukanu told the media on

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Sunday. “I'm looking forward to it. I think it's a great opportunity to

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play with one of the best, probably the best tennis player of all time.