Doumit, who was on the DL with a concussion, is expected to split time with Lastings Milledge in right field and Chris Snyder at catcher. Doumit made four rehab appearances with Indianapolis, playing catcher, designated hitter and right field, where he had no balls hit to him Tuesday in his only rehab start there.
Doumit, who said he feels no limitations, has played in right field 40 times for the Pirates, with 36 of those appearances coming in 2007. He has played right field just once since then, however.
"It was all right," Doumit said of his rehab start in right. "I think I've played enough out there in my career to feel comfortable. It's been a couple years, but I feel all right out there, actually, I enjoy it out there.
"It's unfortunate that nothing was hit my way, but I think those guys knew better," he added with a smile.
Pirates manager John Russell said he will have to "juggle around" ways to play Doumit, Milledge and Snyder.
"We'll piece it together, but it's going to be a little bit of a challenge to make sure we get all the guys in, get some playing time," Russell said, adding, "I know he was ready to come back here, so it's good to have him back."
Kratz, meanwhile, had an optimistic view in seeing his first big league stint come to a close.
"Any time you play against better competition, you learn from your mistakes, but you also learn from watching guys doing it very well at the level I want to be at for a long time, so if you can watch those guys and learn from those guys in a live setting, that's priceless information that you can gain," the 30-year-old Kratz said. "Would I love to stay longer? For sure. I would love never going back, but that's not the reality of the move that they made right now."