NEW YORK -- Seattle Mariners minor league outfielder Boog Powell has been suspended 80 games for violating Major League Baseball's drug agreement after testing positive for a banned performance-enhancing substance.
The commissioner's office made the announcement Thursday. It was Powell's second penalty for a banned substance.
Powell, not related to the former Baltimore slugger in the 1960s and 1970s, was on Seattle's 40-man roster. He hasn't played in the majors.
Powell, 23, was hitting .270 with 27 RBIs and 10 stolen bases in 64 games at Triple-A Tacoma, playing center field.
He tested positive for dehydrochlormethyltestosterone, an anabolic steroid used to increase speed and strength. He was banned 50 games in 2014 after a positive test for an amphetamine.
In a statement, Powell says he accepts the penalty but does not know how the substance could have been in his system.
"I ... will not rest until there is a full explanation for this result which will vindicate me," Powell said. "Until that happens, however, I realize that accountability rests solely with me on this matter."
There have been 12 players suspended this year under the big league drug program.