End zone: Harbaugh, a former special teams coordinator, might have gotten a bit of enjoyment from watching Chicago pull off a fake punt that resulted in a 38-yard touchdown pass from punter Pat O'Donnell to running back Benny Cunningham in the third quarter Monday against the Vikings. But it also caught his attention from a scouting standpoint. "You feel like, 'OK, they're not going to go run that one again unless we just hand it to them, which we shouldn't do,'" Harbaugh said. "And I think it speaks to the mindset that they have in terms of they're going to pull out the stops that they think they need to [in order] to win the game. So it broadens your thinking in terms of what they may do against you. So you've got to be looking for all of those types of things from all three phases." … The Ravens signed rookie offensive tackle Dieugot Joseph to the practice squad after releasing him Tuesday. The team made room for him by waiving rookie center Derrick Nelson.