Mike Rizzo

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Coco Crisp, who stole 49 bases for Oakland last season, fits the mold of what Nationals GM Mike Rizzo is looking for in a center fielder. (Associated Press)

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Washington Nationals General Manager Mike Rizzo (The Washington Times)

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Jayson Werth, who averaged 29 home runs the past three seasons with the Philadelphia Phillies, is under "no pressure," according to Nationals general manager Mike Rizzo, despite his hefty contract, the 14th most lucrative ever in the game. (Associated Press)

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Washington Nationals newest outfielder Jason Werth, right, speaks to Nationals General Manager Mike Rizzo during a news conference at Nationals Park in Washington, Wednesday, Dec. 15, 2010. (AP Photo/Susan Walsh)

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The Washington Nationals newest outfielder Jason Werth holds his new baseball jersey as he stands with Nationals General Manager Mike Rizzo during a news conference at Nationals Park in Washington, Wednesday, Dec. 15, 2010. (AP Photo/Susan Walsh)