Mathiasen and the Indians are 2-0 this season.
Waldorf will play their first game of 2015 on Saturday at 7:00.
Byrnes led the Bulldogs in kills as a junior.
Hansen will be playing his third year of varsity football.
Sonius returns for his third year under center and hopes to improve on last season.
Clear Lake and Newman will both play Thursday at Principal Park in Des Moines, IA.
Central Springs, North Union and Crestwood are all playing in Fort Dodge this week.
Crestwood plays their state quarterfinal game Tuesday 7/21 in Fort Dodge.
True leads the NIC in eight different offensive categories.
Cornick is a multi-sport star at Mason City.