Class 1A will begin their postseason this evening. Ninth ranked IMS will host Sigourney tonight. The winner of that match will face the winner of 14th ranked Keota and English Valleys. Those two teams are playing in Keota. Elsewhere, Lone Tree plays host to Lisbon. The winner plays the winner of Morning Star Academy and Calamus-Wheatland. WACO opens the post season playing Winfield-Mount in Winfield. The winner will face the winner of Notre Dame and New London. Second round matches for Class 1A will be next Tuesday.