"It's more precautionary than anything," Renteria said.
From May 13-24, Valbuena had an eight-game hitting streak, matching his career high, and he batted .433 in that stretch.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.