Raul "The Problem Child" Rosas Jr. is the youngest fighter to step into the octagon in UFC history. He's inching in on his 18th birthday, but he's 17 years old and I'm pretty sure Dana had to personally sign his visa to fight. The real problem child (sorry Jake Paul) is undefeated at 5-0 submitting or knocking out all five of his opponents. He comes from a strong juju gym, but he's versatile and can strike with his opponents as well knocking out his last opponent. His opponent, Mando Gutierrez (7-1), is not a striker and likes to grapple. It will be a good fight if it goes to the ground, but Raul's length is the real advantage as he has 3+ inches for height and reach. This kid is the real deal and he's been fighting grown men since he was 15 and I bet he bodies another one tonight to pick up his 6th win tonight.