Oh, and did I mention that Peterson was probably close to reading short stories when DeMarco Murray was born? (No, he wasn't.)

Peterson just turned 30 last month, and there's a picture of him riding a camel to prove it. He's 30. That's not old in regular-person years, but in running-back years, that's Brandon Weeden-old. And I'm pretty sure Brandon Weeden just became a grandpa.

Adrian Peterson is unlike any other running back we've ever seen physically, but you have to wonder how many more years he has left in the league. Or, at the very least, how many more elite years he has in the league.

I'll say this: we've seen 45 different 1,000 yard rushing seasons in NFL history from backs 30 years or older. When you filter that to 31 years, it shrinks to 22. At 32 years old, it's 11. Four years into Peterson's hypothetical Cowboys' tenure, if AP were to rush for 1,000 yards, he'd join John Riggins, John Henry Johnson and Franco Harris as the only running backs to hit the milestone at age 33 or older.