Week four of the high school football season is highlighted by several ratedmatchups. In class 1A, fourth ranked Postville visits number-five Sumner.Postville coach Chris Evers.Sumner coach Kevin Frisch says the Postville ground game is their topconcern.In class 2A, ninth ranked Osage plays host to Union Laporte City. Osage isninth ranked and 3-0 and coach Lon Lawler is pleased with the start.District four could be the toughest in the state. It includes two otherrated teams, Dike-New Hartford and Denver along with traditional powerAplington-Parkersburg. Lawler says it will be a scramble to make theplayoffs.In class 4A, 7th ranked Sioux City Heelan hosts number-10 Ankeny. Heelancoach Joe Malsam says his team may be over ranked.Malsam says slowing down a powerful Ankeny offense is the key.