Wells had yet to make an appearance since being called up Saturday from Triple-A Iowa. He got an opportunity Monday, pitching five innings in relief of Matt Garza, who gave up seven runs in three innings against the Astros. Wells was charged with one run on three hits. That run came on a solo homer by Jed Lowrie in the seventh.
The right-hander was eager to get started in his new role as a relief pitcher.
"It gives me a chance to help the team and do something a little different," Wells said Monday. "Who knows? Maybe I'll be good at it."
At Iowa, Wells was 2-2 with a 7.71 ERA in six starts. He has been used as a starter the last three seasons but will try life in the bullpen for now.
"One thing I like is the chance to play every day," the right-hander said. "I've [pitched in relief] my whole career until 2008. It's something I'm comfortable with. I'm actually excited."