I think this one is a tough call, I like Bader but I think OSP might have the edge in this one. Bader is a powerful wrestler with KO power and some submission skills, along with a more proven record in the UFC. However, OSP is athletic, fast, and strong with strong submission skills and improved striking. OSP is rising prospect and Bader is still rebounding (a 2 fight win streak) from a TKO loss to Glover Teixeira. I hate to so either lose but I am gonna go with OSP on this one.