Wolf was signed on May 14 to add a veteran presence to the rotation after Jose Fernandez went down with a season-ending right elbow injury.
Wolf made two relief appearances before getting his first start against the Brewers, which turned out to be a rough one.
"He will stay in the rotation and get another start against Atlanta," manager Mike Redmond said. "He was up in the zone. He's a guy who relies on his offspeed pitches and being able to command his curveball and his changeup. It seems like it was a struggle for him. They got on him quickly, and that really ended up being the difference."
Redmond praised Wolf for making it through five innings, which helped take the heat off the bullpen.
"He hadn't pitched in a big league game in a long time," Redmond said. "It's a testament to how hard he's worked to get himself back. His first outing was a little rough. Hopefully the second one will be lights-out. I've seen him lights-out."
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter