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Even if you can process a playbook, two-time Super Bowl winner Umenyiora points to something called the ‘planet theory’, external<\/span><\/a> as a major obstacle for NFL hopefuls like Rees-Zammit.<\/p>\n Espoused by late New York Giants general manager George Young and their legendary head coach Bill Parcells, the theory states there are only a few humans on the planet who have the ideal size and athleticism to succeed as offensive and defensive linemen, thereby making them more valuable.<\/p>\n The opposite is true at running back and wide receiver, which along with quarterback and tight end are considered American football’s ‘skill positions’.<\/p>\n They are the positions Rees-Zammit tried his hand at and, after last week’s decision, he mentioned how so many similar players were competing for a spot on the active roster.<\/p>\n “I think Rees-Zammit is a fantastic athlete, but in terms of pace and athleticism, there’s maybe 500 of those guys in Florida alone, so it’s usually a lot more difficult for players like that,” said Umenyiora.<\/p>\n “You have to be unparalleled. You have to be superior athletically to be able to learn the game and then break through.”<\/p>\n