The Derby Twins broke the game open with a four-run sixth inning for an 8-3 Jayhawk League baseball victory Tuesday over the Great Bend Bat Cats at Burns Field. The Bat Cats (5-10) lost their fifth straight game entering Wednesday’s home game against Derby (10-4). The Bat Cats are 0-6 against the top three Jayhawk League teams.Bat Cats pitcher Drew Repp held the Twins to a 1-1 tie through five innings.