Guerrieri is currently on the roster of Class A Bowling Green of the Midwest League, and his suspension will be effective at the start of the '14 season.
Guerrieri was the Rays' first-round Draft pick in 2011. He went 1-2 with a 1.04 ERA in a dozen starts in '12 to help Class A Short-Season Hudson Valley win the New York-Penn League championship. This season, he earned Midwest League Pitcher of the Week honors on May 13 and was selected to the 2013 All-Star Futures Game at Citi Field in July, but did not participate.
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.