Browns QB Case Keenum has joined QB Baker Mayfield on the COVID list. That leaves QB Nick Mullens to start Saturday's game vs. the Raiders. Mullens has been on the practice squad since September 1, so he at least has some familiarity with the offense. Mullens made 8 starts for the 49ers between 2018 and 2020 and owns a career 64.5% completion rate, 7.9 yards-per-attempt average and 25 TDs vs. 22 INTs. He's probably not a significant downgrade from Keenum. We're still expecting a run-heavy attack from Cleveland on Saturday.