The impact of these three and MNF is impossible to put into words. One of the more interesting stats is that during the '70's women accounted for a very small portion of viewers for NFL games on Sundays, but they accounted for 40% of the viewership for MNF games when these three were put together. To men Gifford was Mr. NFL and to women he was Brad Pitt. The genius of Pete Rozelle and Roone Arledge.