Sierra added to active roster

CLEVELAND -- The Chicago White Sox added Moises Sierra to the active roster before Sunday's game vs the Cleveland Indians and sent Conor Gillaspie to Triple-A Charlotte on an injury rehabilitation assignment.

Sierra, a 25-year-old outfielder, was claimed off waivers from Toronto on Saturday and takes the roster spot of pitcher Frank De Los Santos, who was optioned to Charlotte Saturday night. Sierra was designated for assignment on May 1 after going 2-for-34 (.059) in 34 games with the Blue Jays this season. He batted .290 (31-107) with 13 RBI and 11 runs scored in 35 games with Toronto in 2013.