The Office of the Commissioner of Baseball announced today that Boston Red Sox Minor League outfielder Cristopher De La Rosa and New York Mets Minor League pitcher Junior Guerra have received 50-game suspensions after each tested positive for a performance-enhancing substance in violation of the Minor League Drug Prevention and Treatment Program. De La Rosa, a member of Boston’s Dominican Summer League team, tested positive for metabolites of Stanozolol, and Guerra, who is currently on the roster of Triple-A Buffalo of the International League, tested positive for a metabolite of Nandrolone.

The suspensions of De La Rosa and Guerra will be effective at the start of next season.

The suspensions of De La Rosa and Guerra mark the first two minor league drug suspensions of 2009. On January 6, J.C. Romero of the Phillies and Sergio Mitre of the Yankees organization were each suspended 50 games as part of the Major League Drug Prevention and Treatment Program, bringing the total suspension to four in 2009.

(See the complete historical record of drug violations in Major and Minor League baseball)

Maury Brown is the Founder and President of the Business of Sports Network, which includes The Biz of Baseball, The Biz of Football, The Biz of Basketball and The Biz of Hockey. He is contributor to Baseball Prospectus, and is available as a freelance writer. Brown's full bio is here. He looks forward to your comments via email and can be contacted through the Business of Sports Network.

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