San Francisco Giants minor league shortstop Anthony Tandron was handed an unpaid, 56-game suspension Friday for testing positive for a performance-enhancing substance.

Tandron, who was positive for the substance Boldenone, is a prospect on the Dominican Summer League Giants roster.

A news release from MLB said he specifically violated MLB’s drug prevention and treatment program for minor league players assigned outside the U.S. and Canada.

Tandron’s suspension will go into effect when the 2024 DSL season begins next month.

Tandron, 18, is not ranked among the top 30 prospects in the Giants’ system by MLB Pipeline.

–Field Level Media