HOUSTON -- Casey Coleman rejoined the Cubs on Monday in Houston, and the right-hander is expected to start Wednesday night against the Astros.
Coleman said his stint in Triple-A Iowa was worthwhile.
"It's good to go down there because I had struggled a little bit earlier in the year," said Coleman, who was sent to Iowa on July 5. "I knew I had to go down because the guys up here were pitching well.
"It's good to get in a consistent routine," he said. "I got back to what I've always done, that's throw strikes and not overpower people. Just get ground balls and keep your team in the game."
Coleman went 2-4 with a 7.23 ERA in 11 appearances, nine of them starts, with the Cubs this season.
The 24-year-old said he also fixed a few things in mechanics, crediting Iowa pitching coach Mike Mason for helping him.
"Mentally I'm better," he said. "A lot more positive, and my confidence is back. Hopefully I can help this team get a few wins."
Coleman was called up from Triple-A last year in early August, making eight starts and going 4-2 with a 4.11 ERA.
"They gave me an opportunity to make the team out of Spring Training in the bullpen this year," he said. "Now that I'm ready, I know it's late in the year, but hopefully I can contribute."