The Chicago Cubs have officially traded left-handed reliever Sean Marshall to the Cincinnati Reds in exchange for young southpaw Travis Wood. The Cubs also acquired outfielder Dave Sappelt and minor leaguer infielder Ronald Torreyes. Wood, who turns 25 in February, split the 2011 season between the Reds and Triple-A Louisville. He went 6-and-6 with a 4.84 earned run average in 22 games in the majors. The 29-year-old Marshall amassed a 32-and-40 record, seven saves and a 3.96 ERA in 292 games during his six-year stint with the Cubs. Last season, he went 6-and-6 with a career-best 2.26 ERA in 78 appearances.