NORMAN — Football is in Derrick Johnson II ’s DNA. Johnson is a defensive back who signed with Oklahoma in December as part of the Sooners’ 2026 recruiting class. He is the son of Derrick Johnson Sr ., who spent a few years in the NFL after playing collegiately at Washington. Being raised by someone who played football at its highest level, Johnson admitted that he grew up with an advantage, relative to other rising prospects. “He's taught me a lot of things like coming in that a lot of people don't get to have,” Johnson said. “I think that’s definitely helped me throughout this process.” Johnson stands 6-0 and weighs 170 pounds. 247Sports and Rivals both graded him as a 4-star recruit, and he chose the Sooners over offers from UCLA, Washington, TCU and several other major programs. As a senior at Murrieta Valley (CA) High School in 2025, Johnson logged 25 total tackles, 19 solo tackles, three pass breakups, three tackles for loss, two interceptions and a forced fumble in six games.…