GRINNELL, Iowa – The Prairie Fire baseball team fell to Grinnell 18-14 in the final game of a three game series on Sunday afternoon. Knox plated a run in the first inning as Etienne Thomas drove in Luke Mathieu with a sacrifice fly. The Pioneers responded with two runs in the bottom half to take the lead. Grinnell added three more in the second to go ahead 5-1. The Prairie Fire scored twice in the top of the third on an RBI single from Nicholas Nitti and a solo home-run by Evan Laws. Knox tied the game at 5-5 in…