CHICAGO (AP) -- The Chicago Cubs have acquired third baseman Ian Stewart and right-handed reliever Casey Weathers from the Colorado Rockies for outfielder Tyler Colvin and infielder D.J. LeMahieu.

Stewart, who hit 25 homers in 2009 and 18 more in 2010 for the Rockies, slumped last season when he split time Colorado and Triple-A. In 48 games with the Rockies he batted .156.

Weathers was 2-2 with a 5.32 ERA at Double-A Tulsa last season in 44 appearances. He missed the 2009 season after elbow ligament replacement surgery.

Colvin hit 20 homers as a rookie in 2010 but struggled last season and was sent to Triple-A. LeMahieu made his major league debut with the Cubs last year and batted .250 in 37 games.

The trade was announced Thursday night.

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