These three played together basically the entire game. Sanders was the guy who usually was the FS while the other two lined up against Witten or WR's. I don't think Meriweather played a snap on D (if he did it was in garbage time). I thought Seau and Harrison are showing their age a bit. Seau always seems to line up over the center, but it looks like he has a hard time shedding blocks. Harrison is still solid against the run, but in coverage, Witten, in particular, ran great routes and Harrison was finding it difficult to keep up. Marcellus Rivers played quite a bit especially in power formations and around the red zone which is to be expected I guess. Wait... I just checked Reiss's blog and he said Watson suffered an injury so that could explain Rivers' expanded role (I didn't notice Watson was hurt).