A burly offensive lineman with natural anchor and above-average length, Rivers is best-suited for short spaces, where his athletic limitations can be mitigated. He could get a shot at right tackle but slow feet will put him in harm’s way against NFL edge rushers. He’s sturdy at the point against bull-rushers and space-eaters. He works with stiff hips and below-average base footwork, which often short-circuit attempts to leverage and clear the gaps. He’s a clunky mover who will be tied to scheme, but his mass and length increase his likelihood of finding starting reps on the interior, provided he can stay healthy.