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Eagles safety Colt Anderson has posted the basic details on Twitter: quarterback Mike Vick and running back LeSean McCoy raced in practice on Thursday, and Vick won.

But there’s more to the story, which we’ve obtained from a league source with knowledge of the situation.

McCoy had been riding Vick for weeks, calling him “old man” and challenging Vick to a footrace. Vick had been laughing it off, until today.

Today, Vick had enough. So he asked coach Chip Kelly if he could accept McCoy’s invitation. Kelly agreed.

So they lined up and took off, and Vick didn’t just beat McCoy. Vick smoked McCoy by roughly five yards over a 40-yard distance, and their teammates went nuts.

It has no direct relevance to the fate of the 2013 Eagles, but it proves that the “old man” can still move, which is bad news for any defense facing him this year.