The Blue Jays placed outfielder Brad Wilkerson on the 15-day disabled list Friday with lower back spasms and added utilityman Jose Bautista to the 25-man roster. Bautista, acquired from Pittsburgh on Thursday for a player to be named, was not in the lineup Friday. He will start at third base Saturday when the Blue Jays face Boston left-hander Jon Lester, manager Cito Gaston said.

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