Duncan and Ginobili, top 20 in RPM, are still too great to retire

What do the two Spurs greats have left? AP Photo/Eric Gay

With Tim Duncan at age 40 and Manu Ginobili 38, there's talk that it might be time for the Spurs legends to hang them up after a (relatively) early playoff exit this year.

I don't think so. And advanced stats agree with me.

In fact, on a per-possession basis, Duncan and Ginobili remained top-20 NBA players this season, believe it or not.