"The more that guys are able to absorb, the more you can kind of have them do those versatile things and run different types of routes," McVay continued. "So it is very important for guys to have an above-the-neck approach that gives them a chance to know what's the full concept, as opposed to just individual routes and what the Z, the F, or the X receiver does on any given play."

Cooper is a player who embodies that philosophy for Los Angeles, having taken snaps at all three different spots from the offseason program to now. The wide receiver said he's very comfortable with each position, being able to jump in whenever and wherever he's needed.

"With the offense that coach has put in, there's a lot of concepts so everybody has to know what to do," Cooper said Thursday. "One time, I could line up on the outside. And the inside, I have to know what to do if I'm the 'Z,' the 'X,' or the 'F.' So he stresses that a lot about knowing the offense inside and out."

"Like today, we were in '12' personnel — I think Sammy was getting taped up or something — so I just jumped in at 'X' and ran the play when Sammy couldn't do it," Cooper added. "So, I'm very comfortable. I can go out there at X, F, Z — whatever it is, I'm good with the playbook."

Cooper said McVay and wide receivers coach Eric Yarber have done well to teach the new system, and distribute reps in practice. That's part of why the South Carolina product has been able to pick things up so quickly. But he's also taken advantage of extra reps when given the chance.