Sierra had 170 plate appearances between the Blue Jays and the White Sox in 2014. He finished with a .230/.265/.342 slash line over 96 games.
Sierra, who primarily plays right field, began the season 2-for-34 with Toronto before Chicago claimed him off waivers. With the White Sox, he hit .276/.311/.417 in 135 plate appearances.
Jackson Alexander is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.