It was Neville’s 10th state championship and second in three years.
After Karr scored a touchdown on its opening series, Diarse raced to the end zone on a keeper as Neville (14-0) went ahead for good, 7-6. Neville sealed the victory with two touchdowns late in the third quarter, a 38-yard interception return from linebacker Ricky Wyatt and an 11-yard run from Salarrious Jones.
Karr (11-4), which won its only state title in 1993, lost in the final for the second straight season.
Three of Karr’s five turnovers were on consecutive possessions in the third quarter. Two of the miscues, including Wyatt’s interception return, came after starting quarterback Devante Noil left briefly with a leg injury.