BY JIM MISUNASjmisunas@gbtribune.com The Great Bend Chiefs turned three doubleplays to spark a 6-4 victory over Pratt Saturday to advance into Sunday’s Chiefs Baseball Classic semifinal. The Chiefs (9-10) play at 2 p.m. in Sunday’s semifinals against the Hutchinson Colts at the Great Bend Sports Complex.Catcher Jared Maneth ended the game with the tying runners on base by throwing out Justin Lamatsch on a strikeout with first base occupied. Pratt featured Lamatsch at second base and Wyatt Schrag at first base when relief pitcher Brayden Smith struck out Drew Roadhouse.