A recap of the UFC 157 main event bout between Ronda Rousey for the UFC women's bantamweight title. Rousey retained her championship with a submission victory late in the first round. In the main event of UFC 157, Ronda Rousey overcame a dangerous situation early to finally submit challenger Liz Carmouche with an armbar late in the first round of their UFC women's bantamweight title fight.