Starling Marte, an All-Star outfielder emerging as one of the game’s top all-around talents, was suspended 80 games by Major League Baseball after testing positive for nandrolone, a devastating blow for the Pittsburgh Pirates.

Marte, 23, won a Gold Glove in 2016 and compelled the Pirates to move franchise player Andrew McCutchen from center to right field in the off-season. He batted .311 with a .362 on-base percentage, and stole 47 bases last season.

“I have been informed that I have tested positive in one of the tests that are regularly done in my job," Marte said in a statement. "In this very difficult moment I apologize to my family, the Pittsburgh Pirates, my teammates, my fans, and baseball in general. Neglect and lack of knowledge have led me to this mistake with the high price to pay of being away from the field that I enjoy and love so much. With much embarrassment and helplessness, I ask for forgiveness for unintentionally disrespecting so many people who have trusted in my work and have supported me so much. I promise to learn the lesson that this ordeal has left me. God bless you.”