Marvin Daniel Levy: Led Bills to unprecedented four straight Super Bowls. . .
Had 154-120-0 overall record. . .
His coaching victories ranked 10th in NFL history at time of retirement. . .
Quickly improved Chiefs from 4-12 to 9-7. . .
Guided Buffalo to eight playoff appearances in 11 seasons. . .
NFL Coach of the Year, 1988. . .
AFC Coach of the Year, 1988, 1993, 1995.