WASHINGTON -- The office of the Commissioner of Baseball announced on Thursday that two Minor League players from the Nationals -- outfielder Edgardo Baez and shortstop Ofilio Castro -- have received 50-game suspensions after each tested positive for an amphetamine, a performance-enhancing substance, in violation of the Minor League Drug Prevention and Treatment Program.

Drug Policy in Baseball

The suspensions of Baez and Castro, both of whom are with Double-A Harrisburg, are effective immediately.

Baez, 24, was hitting .254 with nine home runs and 28 RBIs in 101 games, while Castro, 25, had a .296 batting average with four home runs and 36 RBIs in 96 games.

Acting general manager Mike Rizzo was not available for comment.