Horn was sent from the White Sox to the Cubs on Thursday in exchange for Ryan Tepera, Jesse Rogers of ESPN.com reports.

EDGE Analysis

Horn isn't much more than a fringe prospect, as he pairs shaky command with decent but hardly overpowering stuff. The lefty owns a 5.63 ERA in 38.1 innings across Low-A and High-A this season, striking out 27.3 percent of opposing batters while walking 10.9 percent.