The Republic-Times Athlete of the Week is Waterloo High School football player Koby Osterhage. The junior came up big for the Bulldogs in their season-opening 13-2 road win at Mater Dei last Friday. Osterhage finished with 104 rushing yards on seven carries, including a 74-yard touchdown run in the fourth quarter. He also had two receptions for 33 yards and recorded a quarterback sack on defense.