in the 2018 sphl playoffs, the fourth-seeded havoc defeated the mississippi riverkings in the challenge round 2-game-to-1, the macon mayhem in the semifinals 2-games-to-1, and the top-seeded peoria rivermen 2-games-to-1 in the finals to claim the franchise's second president's cup. it was the first time in league history that a fourth-seeded team won the championship.