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It ain't Christian McCaffrey, Breece Hall or Bijan Robinson ... no, the best tailback in the NFL is Alvin Kamara!!
... at least, that's according to the Saints star's teammate, Demario Davis, who tells TMZ Sports he's sure no one else in the league is as good a runner as Kamara.
Davis didn't mince words when we talked to him this week following AK's four-touchdown performance against the Dallas Cowboys ... saying point blank Kamara's the NFL's top dog.