Todd Frazier started Friday night's game at third base for Scott Rolen, who played the last two games in a sweep of the Pirates. Rolen missed a week dealing with two disk protrusions in his lower back.
"Frazier's been out a couple of days, I figured that was long enough," Baker said. "Just mixing and matching, trying to keep everybody sharp and not letting guys go too long without playing."
Zack Cozart, who is battling a left oblique strain, hasn't played since Sept. 3. He hit off a tee, but has yet to hit live pitching. The 27-year-old has taken grounders.
Wilson Valdez received the nod at shortstop for the sixth time in the past eight games.
"Zack's doing pretty well," Baker said. "That oblique, he has to be really careful with that. We're taking our time, and had a long talk with him last night. We're hoping soon, we just don't know when."