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Luke Kuechly, NaVorro Bowman, Patrick Willis and Thomas Davis formulate one of the finest linebacking quartets we've seen on a field in a playoff game in quite some time.
Kuechly and Bowman were first-team All-Pros in 2013.
While Willis and Davis didn't receive All-Pro recognition, the former was Pro Football Focus' (subscription required) No. 2-rated inside linebacker behind Bowman, and the latter was the No. 3 4-3 outside linebacker behind Von Miller and Lavonte David.
All four will have a major impact on the outcome of this game, but we have to pay attention to their linebacker mates.
Chase Blackburn and A.J. Klein don't get on the field often, but the rookie from Iowa State, Klein, was given a PFF plus-1.9 grade for his performance against the 49ers in Week 10.
On the other side of the ball, strong-side linebacker Ahmad Brooks was a second-team All-Pro this season; however, rather interestingly, PFF ranked him as the No. 23 3-4 outside linebacker out of 29 who played at least 50 percent of their respective teams' snaps this season.
Which Brooks will show up Sunday?