Oklahoma benched starting quarterback Jackson Arnold on Saturday in a game against Tennessee, turning to backup Michael Hawkins the rest of the way. And Hawkins will remain the starter coming out of that loss, coach Brent Venables revealed to the media. According to Venables, Arnold just wasn’t getting it done and his repeated mistakes called for making a change. CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once you play $5 in lineups! “It was just getting away from us,” Venables explained. “If it was still 3-3 you might be able to tolerate it.” Going forward, Ok…