Top five offensive position groups

Everyone loves player rankings. NFL Network's top 100, voted on by the players themselves, is always going to generate some gripes and disagreement -- as will ESPN's #NFLRANK, set to be released later this summer. And while both of those projects are useful at gauging individual talent, they don't delve into the broader position groups that make life nightmarish for opponents on a weekly basis. Using both past production and future performance as barometers (which incorporates new additions this offseason), below is a look at my five best offensive position groups for the upcoming season. You can find my breakdown for the best units on defense here.

Cowboys offensive line