Brady and Brees cannot play forever. At some point, the current old guard will move on. Who is going to take their places?
Over this season, I plan on tracking every quarterback born in 1994 or later. The cutoff might seem arbitrary, but “25” is a pretty good age to use as a boundary for players who are still maturing versus those who should have arrived already. I can’t convince myself that Blake Bortles (born in 1992) is an unknown quantity, and Marcus Mariota (who will be 26 by November) is just a little too long in the tooth.