Pan down a little on this page, and you will see a chart of all RBs 35 and older
and what kind of production they had. As you can see, the only decent seasons
were by Marcus Allen, and, as I recall, he was mostly a short yardage back
those years - and pretty good at it. He did seem to just play forever. Emmit had
one total so-so, meaningless year in AZ. Other than that, all back 35 or older
pretty much did nothing. I don't care that Tiki took some years off; he is hardly
likely to buck this long-standing trend.