She's also scheduled to take part in a tailgate party before Saturday's fights.
Rousey is 9-0 in the UFC, last beating Sara McMann in February. Her next title defense is scheduled for July 5 in Las Vegas against Alexis Davis.
Light heavyweight champion Jon "Bones" Jones -- the younger brother of former Ravens defensive lineman Arthur Jones -- is headlining Saturday's card in Baltimore against Glover Teixeira.
There is one women's fight on the card, featuring Jessamyn Duke -- Rousey's pupil on "The Ultimate Fighter" -- against Bethe Correia. That bout will be part of the preliminary card televised on Fox Sports 1. The five pay-per-view bouts begin at 10 p.m.