Suero's suspension will begin on the first day of the 2009 season.
Suero allegedly tested positive for Boldenone, while Taveras apparently tested positive for Stanozolol. Suero, 17, spent last season pitching for Baltimore's affiliate in the Dominican Summer League. Suero has made just six professional appearances, logging a 9.53 ERA and walking 11 batters in 5 2/3 innings.
Spencer Fordin is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.