Major League Baseball announced Tuesday Phillies reliever J.C. Romero is suspended for the first 50 games of next season after testing positive for a banned substance.

Romero contends the supplement he took during the season was legal because he bought it over the counter at a nutrition store in the United States and that he called the penalty unfair, reported Monday night

The arbitrator ruled Romero was guilty of negligence. The penalty will cost the left-hander $1.25 million in salary.

Romero was the winning pitcher in Game 3 of the World Series and the clinching Game 5 for the champion Phillies. He'll likely stay in Florida for extended spring training and could be ready to rejoin the team once his suspension is up.