Okay, here are the parameters:

You have to use;

1 Offensive Player
1 Defensive Player
1 player you get to pick which side of the ball.

Doesnt matter what position, you could pick two guards and a DT.

Now, you dont just pick players, you pick certain players attributes to create the superballer. i.e. moss's hands, TO's mouth lol

some basic criteria to make this a lil easier.
offense
legs=speed, agility, jumping, toughness to take down, push
arms=strength, stiff arming, blocking ability, throwing power and accuracy.
hands=catching, securing the ball, some blocking aspects
head=intelligence, intangibles, football IQ, mojo, winning, etc..

defense
legs=speed, push, jumping, covering speed, agility, tackling power
arms=strength, shedding, man coverage, tackling ability, pushing blockers
hands=catching, stripping ball, shedding blocks, deflections, getting off blocks
head=same as offense
mine;

Perfect Running Back;
Adrian Peterson's legs
Brandon Jacobs' arms
LT's hands
Brian Westbrook's head

Perfect Defensive Back;
Ed Reed's head
Asomugha's legs
Cromartie's hands
Polamalu's arms

Perfect QB;
V. Young's legs
Jamarcus Russel's arms
Peyton's head and hands


this is fun, try it