Ruffin McNeill's impact on the Oklahoma defense -- now his defense, on an interim basis -- may be hard to spot initially.
The time for overhauling a defense comes in the offseason, not six games into the current campaign. Rest assured, McNeill won't be making any tackles either for a unit that could afford all the help it can get on wrapping people up.
Any boost is likely to come from the change itself, from Lincoln Riley's decision to dismiss Mike Stoops and from having a different voice. At least that's the hope for the Sooners, headed to TCU on Saturday after an off week.