He subbed and beat leonardo Santos who was a 7x Jiu-jitsu World Champion. And him having a competitive back and forth fight with Joaquim Silva who is a good finisher on the feet. Clay had his moments in that fight, he does somethings better on the feet than Chase. One of those is his ability to chain combinations with punches and kicks. Chase hooper is an aggressive fighter, and that is what caused Leonardo to lose his fight, is that he tried to eliminate Clay early, but Clay has a solid chin, if Chase goes in hard early and fails to get Clay out, the tables can flip and Clay could beat him with wrestling and aggressive fighting. Chase would have to gas, which he did in the Petterson fight, and Petterson held him down in ful guard, who is not a grappler by trade. Chase Hooper biggest problem is that he has bad fundamentals, he’s very awkward and doesn’t have good strength, his skinny frame allows him to get those subs, but it also makes it easy for guys to out muscle him and press him in the cage and out scramble.
I know they did bjj but Guida stayed in his full guard early when he didn’t have to. If clay avoids the ground for the first round and allows Chase to gas, it lowers the risk of a bottom sub.