Chris Johnson has really stepped up his game after rushing for less than 25 yards for four of the first five games.
Johnson having a big day doesn't guarantee a win, but a loss will definitely be guaranteed if he is a non-factor.
In the first meeting, Johnson had 141 yards rushing. The problem was that the offense was one-dimensional with Matt Hasselbeck at quarterback.
With Jake Locker back, the offense should open up more as a whole. That means Johnson's production should have a much bigger impact on the outcome.
Johnson doesn't even have to necessarily repeat his 141-yard performance from Week 4. That would be nice, but he at least has to be a consistent factor on first and second down.