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*Welterweight bout: ] vs. ]<ref>{{cite web |url=http://punch.ocregister.com/2012/12/19/mma-koscheck-vs-lawler-confirmed-for-ufc-157/21334/|title=Koscheck vs. Lawler confirmed for UFC 157|publisher=Orange County Register|last=Arias|first=Carlos|date=2012-12-19|accessdate=2012-12-19}}</ref>
*Welterweight bout: ] vs. ]<ref>{{cite web |url=http://punch.ocregister.com/2012/12/19/mma-koscheck-vs-lawler-confirmed-for-ufc-157/21334/|title=Koscheck vs. Lawler confirmed for UFC 157|publisher=Orange County Register|last=Arias|first=Carlos|date=2012-12-19|accessdate=2012-12-19}}</ref>
*Lightweight bout: ] vs. ]<ref>{{cite web |url=http://www.mmajunkie.com/news/2012/12/strikeforce-import-caros-fodor-meets-sam-stout-at-ufc-157|title=Strikeforce import Caros Fodor meets Sam Stout at UFC 157|publisher=MMAjunkie|author=Staff|date=2012-12-21|accessdate=2012-12-21}}</ref>
*Lightweight bout: ] vs. ]<ref>{{cite web |url=http://www.mmajunkie.com/news/2012/12/strikeforce-import-caros-fodor-meets-sam-stout-at-ufc-157|title=Strikeforce import Caros Fodor meets Sam Stout at UFC 157|publisher=MMAjunkie|author=Staff|date=2012-12-21|accessdate=2012-12-21}}</ref>
*Welterweight bout: ] vs. ]<ref>{{cite web |url=http://www.ufc.com/news/ufc-157-fight-card-update|title=Jardine/Robertson on for Anaheim|publisher=Ultimate Fighting Championship|date=2012-12-11|accessdate=2012-12-21}}</ref>
The headline bout between Ronda Rousey and Liz Carmouche will be the first-ever women's fight in UFC history. The two will be fighting in the newly created 135-pound bantamweight division. USA Today's Dann Stupp wrote that Cristiane Santos would have been a better match for Rousey, but the UFC President Dana White noted that UFC was unable to strike a deal with Santos. Liz Carmouche is the first openly gay fighter to be signed to the UFC, and landed the headlining fight opposite Rousey after a successful social media campaign to persuade UFC promoter Dana White.