With Ty Montgomery out with a leg injury, Mays worked as the No. 2 running back behind fourth-round pick Jamaal Williams. It means he jumped ahead of fifth-round pick Aaron Jones. That could be the order in which they play in Saturday’s second preseason game at Washington.

This is an on-going competition, and with Ty Montgomery's limited RB experience, pass protection concerns and now a leg injury, whoever emerges as his back-up from the trifecta of RBs the Packers drafted certainly has upside in this upper-echelon offense (if Montgomery falters in the regular season).

Having spent fourth-, fifth- and seventh-round picks on running backs, there has to be some sort of pecking order behind Ty Montgomery to start Packers training camp, so Jamaal Williams will be the second man up in the rotation, RB coach Ben Sirmans said. He also might have the innate running ability to take some carries off Montgomery and have an immediate impact as a rookie after a distinguished career at BYU, where he departed as the Cougars’ all-time leading rusher. He could be the kind of between-the-tackles runner Lacy was in this offense, although Williams isn’t as big.

The RB2 competition is wide open, and while the youth movement might be slightly concerning to some, the Packers have the perfect position coach for this young group, as Sirmans is a former high-school physical education teacher and coached at Boston College, Michigan State, Kent State and Maine at the college level before getting his NFL break in 2012 with the then-St. Louis Rams.

“That can be a challenge. Fortunately, I have a little bit of experience with that,” Sirmans said. “The biggest thing is just competition, competition. With so many different guys, somebody is going to have to rise to the top and step up and be ready to play.”

Related players: Aaron Jones

Whoever is the #2 RB in this offense will have fantasy value since the Packers are unlikely to ride Montgomery for 20-plus touches per game. He's also not the most durable back, so a few starts out of Williams or Jones is entirely possible.