Finishes came at a premium on the UFC Vegas 18 preliminary card, with just the first and final bout of this portion of the card ending early. Closing out the prelims, Devonte Smith scored a doctor stoppage TKO on Justin Jaynes off of the strength of some ground strikes that caused severe swelling around the eye in the seocnd-round. This win puts Smith back into the win column, however, it marks three-straight losses by way of finish for Jaynes.
Before that, surging bantamweight Karol Rosa ran away with the scorecards against Joselyne Edwards. Although there was a brawling spell that broke out at one point, this fight was won in the grappling realm.