You gotta love 70's hair! 
Lafleur
Orr

Lafleur
Orr
Sure the linemen are a bit on the large size (not just in the belly), but we're talking about guys that can bench press 600+ lbs. ...and there is no way that anyone could call the players in the "skill" positions out of shape (ie many of the wide outs in the NFL are world class sprinters).
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