Agree, by evaluation Rivera meant that nobody's job is safe... I think there are some guys giving questionable effort at this point, esp on ST, Rivera suggested that when he said something to the effect that he though we had the right guys out there, they just weren't doing the job.
I think Hines was an example of a guy who was not giving enough effort on ST.
Well if he is looking for an example of little to no effort he need look no further than Jason Baker on last week's tape.
Granted he is a punter, but christ, at least try to make a tackle. Don't just basically stand there and watch the guy run past you.