Through the 2014 season, Nick Saban's record as the head football coach at the University of Alabama was 86 wins and 17 losses. His $7 million salary is the highest received by any college football coach. One sports writer described Saban as the most underpaid college football coach. In what sense might Saban be underpaid? In your answer, be sure to refer to the difference between the marginal product of labor and the marginal revenue product of labor.