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Peterson was added to the Diamondbacks' World Series roster Friday.

Peterson was part of Arizona's roster for the Wild Card Round before being removed for the NLCS, but he's now back on the roster for the Fall Classic. Slade Cecconi -- who replaced Peterson on the NLCS roster -- has been removed. Evan Longoria is just 5-for-37 with 17 strikeouts this postseason, so it's possible Peterson sees some action at third base, at least against right-handed pitching.

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