Corbin threw five hitless innings against the Rockies at Salt River Fields.
Gibson announced his rotation Monday, so it would appear the only way Corbin would make the team would be as a reliever or if one of the starters gets hurt. It's also possible that the team could deal one of the pitchers expected to make the team, which would open up a spot.
"He's probably not the only one," Gibson said when asked if Corbin had a chance to surprise and make the team. "We mull it over. We've got nine games left so things could happen. There's various things that could happen. He's come out of the bullpen for us, he's started for us and again he's very athletic at what he does."
Regardless of whether he starts the year in big leagues or the Minor Leagues, the fact is that Corbin has made an impression.
"If he should go down there we sure would feel confident bringing him back," Gibson said.
Putting himself on the radar for that was what Corbin set out to do when he reported to Spring Training.
"I've worked hard in the offseason like I do every year," Corbin said. "I just tried to come in here and show them what I can do and I feel like I've done that, come in here, pitched as best I could and just giving it a shot to see what happens this year. I think I've always been pretty confident, but just coming up here and showing you can throw against these guys helps a lot."
There's no doubt he's done that as his five scoreless innings lowered his spring ERA to 0.57.