"Frankie's tough. He's shown it again and again. But Gray kind of laid out a blueprint for how to beat Frankie for one round, so now if someone could figure out how to keep it up for two, three, four, five, I think they'll possibly be successful," Melendez said.
Edgar is currently set to defend his UFC lightweight belt for the fourth time against Ben Henderson at UFC 144. In his previous two title defenses against Gray Maynard, Edgar was dominated in the opening round. However in both instances, Edgar rallied from Maynard's blitzing offense to tie the fight at UFC 125 and finally notched a successful title defense at UFC 136 when he KO'ed Maynard in the fourth round.
"He's an amazing fighter and I think he'll have the belt for a while, but there is no one that you feel can't be dethroned or that is unbeatable or anyone you fear, at least in my opinion. I think he's a great fighter, but, again, I don't label him untouchable," Melendez said.
Melendez will be looking to defend his own title against Jorge Masvidal in December's Strikeforce: Melendez vs. Masvidal. Melendez has also expressed his interest in joining the UFC in the near future. If he is victorious over Masvidal, that win could lead "El Nino" into a collision course with the UFC's lightweight division.