Sep 10, 2010 4:57 PM EST

Cubs pitching prospect Jeff Samardzija has been transitioning himself back into a starter.

The former Notre Dame football All-American won 11 games at Triple-A Iowa this season and was called up on Tuesday.

"I think mostly it's about being aggressive on the mound," Samardzija said. "For me personally, I got out of a funk where I'd walk a few guys here and there. But ultimately, I've been battling all year. My pitches have gotten better just by throwing more and that's going to continue to happen."

Samardzija is out of options going into 2011, so if he doesn't make the 25-man roster next season, he's subject to being claimed on waivers by another team.

Via ESPN