1. So many starters were held out (Those off the top of my head are Tonga, Anderson, Fautea, Lee, Ghanwoloku, Warner, I. Kaufusi, D. Kaufusi [limited reps])
2. They were rotating the 1's 2's, and 3's by position. So for example, a lot of the drives would be against the 2nd string DBs, 1 string LBs, and 3rd string DL. Then they would all rotate about half-way through the drive.