Carpenter was sent down on May 25 after going 0-2 with a 4.02 ERA in 14 games for the Astros. He pitched in four games for the RedHawks, allowing two earned runs in 5 2/3 innings. More importantly, he ironed out some issues.
"Burt tweaked a couple of things in my delivery that I had talked to Brocail about prior to going down, and Burt kind of reaffirmed it," Carpenter said. "It was just a couple of things I needed to change, small tweaks. I really felt that it helped out getting on top of the ball more and being able to throw down in the zone a little better and spotting stuff where I wanted to."
While in Oklahoma City, Carpenter said he got back to being relaxed, instead of trying to force things with his mechanics and throwing the ball as hard as he can.
"I'm worrying about putting the ball where I want to instead of trying to throw it as hard as I can, so that was just one of the main things I worked on with Burt," Carpenter said. "I just had to get back to that consistent, relaxed attack."
Carpenter hadn't pitched since May 24 entering play on Wednesday.