The Cubs claimed pitcher Miguel Socolovich off waivers from the Orioles on Thursday and optioned the right-hander to Triple-A Iowa on Thursday. In a corresponding move, Chicago designated catcher Blake Lalli for assignment to clear a spot on the 40-man roster.

The Orioles designated Socolovich for assignment on Aug. 14 after the 26-year-old gave up eight earned runs in 10 1/3 innings over six games out of the Baltimore bullpen. He had spent most of the season with Triple-A Norfolk, earning a spot on the International League midseason All-Star team. In 28 relief appearances with Norfolk, Socolovich posted a 1.90 ERA with 52 strikeouts in 52 innings, limiting opponents to a .179 average.

Lalli made his Major League debut with the Cubs on May 18 and went 2-for-15 with two RBIs in six games. The 29-year-old was hitting .257 with seven home runs and 40 RBIs for Triple-A Iowa this season. He had been with the organization since signing as a non-drafted free agent in May 2006.