NEW YORK -- Mets prospect Daniel Muno has been suspended 50 games for testing positive for a performance-enhancing drug.
Luis Rojas, a pitcher in the San Francisco Giants' organization, also was suspended Friday for the same violation of the minor league drug program.
Muno, an infielder, tested positive for a metabolite of Drostanolone. The 23-year-old switch-hitter was batting .283 with five homers and 23 RBIs in 38 games for Class-A St. Lucie.
Rojas tested positive for metabolites of Stanozolol. He has no record and a 3.38 ERA in six relief appearances for Class-A San Jose. The right-hander was in the Mets' organization from 2007-11.
The commissioner's office said both suspensions are effective immediately.
There have been 43 suspensions this year under the minor league drug program.