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Washington Nationals Manager Mike Rizzo, left, introduces former Arizona Diamondacks player and coach Matt Williams as the new manager in Washington. (Cronkite News Service photo by Jack Fitzpatrick)

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Nationals make it official: Matt Williams is no longer a Diamondback

Arizona Diamondbacks third-base coach Matt Williams was formally introduced Friday as the next manager of the Washington Nationals, reuniting with Nationals General Manager Mike Rizzo, who worked with Williams in Arizona.