of Ebonite Classics, and the Iowa Open. As I have written and said many times, GIBA is run by Joe Engelkes, his wife Rosie and daughter Jennifer Wittenburg. They are among the best, if not the best, tournament operators I’ve seen this side of the PBA, running efficient events, taking no expense fees and putting half of the bracket proceeds back into the prize funds at each event — the... subscribe to read more. The Greater Iowa Bowling Association 2025-26 schedule again includes the 11thFrame.com Open, a pair of Ebonite Classics, and the Iowa Open. As I have written and said many times, GIBA is run by Joe Engelkes, his wife Rosie and daughter Jennifer Wittenburg. They are among the best, if not the best, tournament operators I’ve seen this side of the PBA, running efficient events, taking no expense fees and putting half of the bracket proceeds back into the prize funds at each event — the... Social Media: