The Tennessee Titans signed running back Adrian Peterson on Monday as a response to Derrick Henry’s potentially season-ending foot injury.

Peterson obviously can’t replace Henry’s production, but he’ll still give the Titans a veteran presence in the running back room.

At 36 years old, it’s fair to question why Peterson is still playing.

Most running backs call it a career by the time they reach their early 30’s (if not sooner).

Peterson, however, is determined to play as long as possible.

And I think there’s one major reason why Peterson can’t quit football yet.

It’s because he has some history to make with the Titans.

Peterson, who played college football at Oklahoma, is only 449 yards away from passing Barry Sanders for No. 4 on the all-time rushing list (behind Emmitt Smith, Walter Payton, and Frank Gore).

So what are the chances of Peterson passing Sanders this season?

Well, the Titans have nine games left on their schedule. Last season, Peterson averaged 3.9 yards per carry with the Detroit Lions.

If Peterson produces at that same level in 2022, he’d need 115 carries the rest of the season, which is about 13 carries per game.

That could be a tall task for a running back who hasn’t played since last season. But there are still times — even now that Peterson is in his mid-30s — that the future Hall of Famer looks unstoppable.

By the way, if Peterson passes Sanders for No. 4 on the all-time rushing list, he’ll be under 700 yards away from Frank Gore, who is No. 3 on the all-time list.

Featured image via Tim Fuller-USA TODAY Sports