Hoyer: Marmol's 2011 unacceptable

Carlos Marmol struggled last season, but Jed Hoyer isn't ready to give up on the closer. Jonathan Daniel/Getty Images

Chicago Cubs general manager Jed Hoyer said Carlos Marmol's performance last season was unacceptable, but he remains confident the closer can regain his former.

"I don't think what happened last year is acceptable," Hoyer said Thursday on "The Carmen, Jurko & Harry Show" on ESPN 1000. "I think there's nothing more demoralizing to a baseball team than to win for 2:45 and then lose in the last 10. I think that happened a lot last year.

"If you look back, this guy has had some dominant years. ... Everyone said the slider wasn't quite the same last. Hopefully there are some mechanical things we can do to get that back. Blowing 10 saves isn't acceptable, but we're not wiling to say he can't get back to where he was before."