“Darth" is set to take on Linton Vassell on Nov. 3, when Bellator 186 takes place at the Bryce Jordan Center in University Park, Pennsylvania. MMA Fighting confirmed the news following a report by PennLive.
Phil Davis and Ed Ruth are also set to compete at the card, but the promotion has yet to announce their opponents.
Bader (23-5) defeated Davis via split decision to claim the light heavyweight championship last June at Madison Square Garden in New York, winning his Bellator debut after leaving the UFC on a two-fight winning streak.