Castro was suspended 30 games without pay Friday and fined an undisclosed amount for violating the league's Joint Domestic Violence, Sexual Assault and Child Abuse Policy, Mark Feinsand of MLB.com reports.
Castro will also be ineligible to participate in the postseason and will enter a treatment program. His suspension will expire in early September, though the Nationals intend to release him once his suspension is over, per Mark Zuckerman of MASNSports.com, so he won't be playing for them again this season.