There are 55 men who played in the NFL past their 40th birthday. Only two were linebackers.
James Harrison plays as if he could become No. 3.
At 37 years, 5 months and 21 days, Harrison is gaining speed rather than slowing down. He played in 50 defensive snaps in the Steelers' 25-13 victory against Arizona and was the highest-rated player on that defense, according to Pro Football Focus............
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