A big welterweight division fight has been added to UFC 166 as Hector Lombard makes his welterweight debut against Nate Marquardt. Lombard won one of three while a middleweight in the UFC and he is a former Bellator Middleweight Champion. Marquardt is currently winless in his second UFC run, dropping a fight to Jake Ellenberger by first round TKO at UFC 158. UFC 166 takes place on October 19th from the Toyota Center in Houston, Texas with Cain Velasquez and Junior Dos Santos headlining.