The "'s best running back" distinction has changed hands so frequently and is so fleeting for those who own it that declaring a back to be the best in the league at his position has almost become pointless.
That's not to say that Derrick Henry, Dalvin Cook, Christian McCaffrey, Alvin Kamara and Nick Chubb aren't all awesome players. It's just that, at this point, all it takes is a big week or two for a new back to take the throne.
It wasn't long ago when the league's running back hierarchy was unmistakably led by Ezekiel Elliott, Saquon Barkley and Todd Gurley, who ranked 1-2-3 in rushing yards in 2018.