FILE - In this May 3, 2010, file photo, Arizona Diamondbacks' Cesar Valdez delivers a pitch against the Houston Astros during the first inning of a baseball game in Houston. Valdez, a 32-year-old right-hander, returns to the big leagues for the first time since 2010 when he starts for Oakland against Seattle on Thursday, April 20. Valdez is making a spot outing in place of opening day starter Kendall Graveman, who is on the disabled list because of a strained right shoulder. (AP Photo/David J. Phillip, File)
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