Why OU defensive end Marvin Jones Jr. is now wearing No. 97by: Bob Przybylo08/10/25BPrzybyloRead In AppOklahoma defensive end Marvin Jones Jr. battles during a drill at OU fall camp. Photo - Carey Murdock/SoonerScoopWhy OU defensive end Marvin Jones Jr. is now wearing No. 97, making the switch from the No. 8 jersey he had in the spring.