DES MOINES, Iowa (AP) – Northern Iowa’s football team is ranked No. 7 in a preseason poll of head coaches in the Football Championship Subdivision. The Panthers are one of five Missouri Valley teams in the 25-team poll, led by defending national champion North Dakota State at No. 1.  Northern Iowa went 10-3 last season, winning a share of the league title and posting its sixth season of at least 10 victories since 2001.  The Panthers open the season on Sept. 1 when they face reigning Big Ten champion Wisconsin.