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Gavin Rossdale, John Mayer

GSI Media, Scope Australia/PacificCoastNews.com

It's match point here at the first-ever E! Open.

On one side, we have John Mayer, wearing his homage to the 1980s in short shorts and sweatbands. His opponent: Gavin Rossdale, a shirtless, rockin' racketeer.

It's almost like the Roger Federer-Andy Roddick Wimbledon final all over again, and we just can't pick a side.

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