If Broncos don't have Koppen... 

July, 28, 2013
7/28/13
3:45
PM ET
Rough news at Denver Broncos camp today, where center Dan Koppen was carted off the field with a leg injury. NFL Network's Ian Rapoport says the team fears that Koppen tore his ACL, which would end his 2013 season before it began.

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