Panthers LB Luke Kuechly

Stats: 118 games, 1,092 combined tackles, 18 interceptions, 12.5 sacks

Awards: Defensive Rookie of the Year, Defensive Player of the Year, seven Pro Bowls, five First Team All-Pros

What happened: We don’t know exactly why Kuechly decided to walk away at this point. Reading between the lines it’s not hard to imagine that his health is the main reason. Kuechly has had several documented concussions as well as shoulder and labrum injuries. He leaves at just 28 years old.

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