Three observations …
•Updating Jared Allen's stat sheet vs. Steelers left tackle Mike Adams: 2½ sacks, one holding call, one key hurry and one Steelers trade for Cardinals left tackle Levi Brown.
•A confident Panthers QB Cam Newton travels this week to Arizona, where he threw for 422 yards and two TDs in his NFL debut in 2011. Next up: A Winfield-free (maybe) Metrodome next Sunday.
•Percy Harvin is a great player, but teams that have employed him but were unable to play him because of injuries are 8-0 in their past eight regular-season games.
Two predictions …
•The Lions' streak of losses in Wisconsin will reach 23 on Sunday.
•The Bears' 29th-ranked pass rush won't enjoy facing Drew Brees.