Cameron Baranek of the Marlins was banned 50 games after testing positive for stimulants. Drafted in the ninth round in June, the 22-year-old was hitting .243 with 22 RBIs in 28 games in the rookie-level Gulf Coast League.
Madinson Colon of the Braves was suspended 72 games after a positive test for a performance-enhancing substance. The 19-year-old right-hander was 0-3 with an 18.41 ERA in eight relief appearances in the Dominican Summer League.
The commissioner's office announced the penalties Friday.
There have been 55 suspensions this year under the minor league drug program and five under the major league program.