If he beats Vitor, him, Weidman and Anderson are the only fighters who hold wins over 3 or more currently ranked MW's from this site: Vitor, Bisping and Okami. His only losses at MW since returning to the UFC in 2009 are two losses to Anderson and a loss to Maia in his return debut. Chael & Vitor were the 2 top contenders at MW for years. Both have been fighting at 205 since then, where Vitor is 1-1 and Chael is 1-2. Both lost to Jones. Vitor is the top contender. Beat him, everything else is a step-down. Rockhold recently lost to Vitor. Jacare's most highly ranked win in the UFC is Okami, who Sonnen also beat. Those were facts, here's an opinion: with Chael's forward-charging power-wrestling style, Weidman's wrestling will be tested for the first time. I didn't believe Munoz could do it, but Sonnen outwrestled Okami, which no-one else in the UFC has done (he was with them for 18 fights).