NFL football betting trend indicates that better NFL betting value may lie with the underdog Vikings than the favored Packers. NFL betting fans are undoubtedly awaiting the Week 1 match up between the Minnesota Vikings and the Green Bay Packers with great anticipation. Green Bay and Minnesota have a strong rivalry that dates back many years, and this NFL betting match up should also mark the beginning of the Aaron Rodgers era in Wisconsin. The early NFL betting odds have the home team Packers favored at -3 over the Vikings and there are two relevant trends that should be taken into account as you handicap this NFL betting spread.