"Schlit really did a great job this spring," Renteria said. "After we assigned him, he kept doing his job, still kept doing his thing. We'd bring him back and use him, so he stuck to it."
Schlitter was 1-0 with a 2.08 ERA this spring, allowing 10 hits and two earned runs while walking only one and striking out nine in 8 2/3 innings over eight appearances.
Cabrera had looked sharp early. But in his last two outings, he struggled, including a game against the Angels on Tuesday, in which he gave up five runs on four hits over a third of an inning. Cabrera was 0-1 with 6.97 ERA in 10 1/3 innings covering 10 appearances and is out of options.
Schlitter joins a bullpen that includes closer Jose Veras, James Russell, Pedro Strop, Wesley Wright, Hector Rondon and Justin Grimm.
Renteria said he'll be able to use Schlitter in a multitude of ways.
"He obviously gives us a lot of flexibility," Renteria said. "He could be a multi-inning type guy. He has tremendous downward plane in his action. He's pretty good. So we would feel comfortable using him in any capacity."
Barry M. Bloom is national reporter for MLB.com and writes an MLBlog, Boomskie on Baseball. Follow @boomskie on Twitter. 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.