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Giants' Dunnington, Reds' Mejia suspended
San Francisco Minor League right-hander, 23, to miss 50 games
08/06/2014 5:30 PM ET
Jacob Dunnington went 1-1 with a 3.60 ERA in 14 games last year but has not pitched this season. (Kevin Pataky/MiLB.com)

Giants right-hander Jacob Dunnington and Reds shortstop Cesar Mejia were suspended by Major League Baseball on Wednesday for using banned substances.

The Office of the Commissioner of Baseball said Dunnington received a 50-game suspension without pay after a second positive test for a drug of abuse, while Mejia was hit with a 72-game suspension without pay after testing positive for boldenone. Both suspensions are effective immediately.

Dunnington, 23, has not appeared in a Minor League game this season after pitching in 14 contests last season for three Giants affiliates. He signed with San Francisco as an undrafted high school free agent in 2009 for $2,500 and is 10-5 with a 2.78 ERA and 190 strikeouts in 139 1/3 career innings over four seasons in the Minors.

Mejia, 19, is batting .200 with seven RBIs, a pair of stolen bases and a .284 on-base percentage in 25 games for the Reds' Dominican Summer League affiliate. Under the rules of the new the Minor League Drug Prevention and Treatment Program for Rookie and Short-Season leagues, a first violation receives a discipline of 80 games or the total number of regular-season games in the league, whichever is shorter. The DSL plays a 72-game schedule, so the suspension of Mejia is for 72 games.

Players are typically issued a warning following a first positive test for a drug of abuse and a suspension for a second offense. Substances considered "drugs of abuse" by Major League Baseball include cocaine, marijuana, heroin, LSD, ecstasy and other opiates. Full-season Minor Leaguers who test positive for a performance-enhancing substance are subjected to an immediate 50-game suspension.

Boldenone, more commonly known and marketed as Equipoise, is an anabolic steroid developed for veterinary use, primarily to treat horses. Side effects include increased muscle growth, red blood cell counts and appetite.

The Commissioner's Office has suspended 45 players this year for violating the Minor League drug program.

Danny Wild is an editor for MiLB.com. Follow his MLBlog column, Minoring in Twitter. This story was not subject to the approval of the National Association of Professional Baseball Leagues or its clubs.
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