 Mancini gave Argüello trouble early and built a lead on the scorecards, but Argüello used his experience to his advantage in the later rounds and stopped Mancini in the 14th round.Mancini would rebound from the loss to Argüello by winning his next two bouts, including a second successful defense of his NABF Lightweight title against Julio Valdez (10th-round TKO) which would earn him another chance at a world title.On May 8, 1982, in a match held at The Aladdin in Las Vegas, he challenged the new World Boxing Association lightweight champion, Arturo Frias.