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Misunderestimated (Brian H)I don't think they exactly resurrected their careers (no injuries I am aware of) but Cy Seymour and George Van Haltren also started out as Pitchers and then moved to the outfield before Wood got to the majors.
http://www.baseball-reference.com/s/seymocy01.shtml
http://www.baseball-reference.com/v/vanhage01.shtml
Neither of them were close to Wood as a Pitcher (not many ever were) but both of them became great outfielders (ie. they could really hit). Van Haltren is a strong Hall of Fame candidate and Seymour was one of the best players in baseball for a short time.
In terms of Pitching, Babe Ruth is closest to Wood. He didn't resurrect his career -- he voluntarily went from being one of the game's best Pitchers to its best outfielder/hitter (Ever).