The running back position in the NFL is changing drastically.
Teams have a constant need for players who can churn out yards on the ground, but running backs have short shelf lives in the present NFL. So to combat the fragile nature of the position, many teams are employing a backfield-by-committee approach to keep their backs fresh.
In hopes of bolstering their backfield, the Green Bay Packers spent two picks in the first four rounds on a pair of running backs. Alabama's Eddie Lacy could provide the power the Packers have been lacking from the position, while UCLA's Johnathan Franklin figures to be their much-needed change-of-pace.
While every-down backs are a dying breed, the Minnesota Vikings still go all-in with Adrian Peterson. Some of that has to do with the fact that Peterson is the best back in football, but Toby Gerhart, while a tough runner between the tackles, isn't exactly a highlight reel waiting to happen.
NFL backs come in all shapes and sizes. For every Darren Sproles, there's a LeGarrette Blount. However, having a traditional "thunder and lightning" duo in the backfield isn't a requirement to have a successful tandem of runners either.
Let's take a look at the top 10 running back tandems in football.