Tallison is an example of what the UFC should not do with a prospect.
The guy entered the UFC, demolished one of the Tafa's and immediately got a ranking spot and main event against Derrick Lewis. What the hell? Instead of building a 25 year old HW prospect up, giving him some cannon fodder first and let him develop, he's now forced to fight the top15 guys when he clearly lacks the skills and experience to hang out with them.
He probably loses 2 of his next 3 and gets cut, and the UFC may blame themselves for not giving a young HW guy a proper chance to develop.