Yankees minor leaguer Alfredo Aceves suspended 50 games
The commissioner's office announced the penalty on Thursday under the minor league drug program.
The suspension of Aceves, who is on the roster of the Triple-A Scranton/Wilkes-Barre RailRiders, is effective immediately.
Aceves was with the Yankees earlier this season and was 1-2 with a 6.52 ERA in 10 games. He is 31-16 with a 3.83 ERA in parts of seven seasons with the Yankees and Boston Red Sox for his career.