NORMAN, Okla. (AP) — Jackson Arnold was expected to be the next big thing at Oklahoma, another great quarterback at a school that produced Heisman winners Baker Mayfield and Kyler Murray and featured stars Jalen Hurts, Spencer Rattler, Caleb Williams and Dillon Gabriel at the position during the past decade.
Arnold, a five-star recruit, had as much hype as any of them, and when Gabriel decided to t…