I wasn't going to post on this, but after struggling mightily on a flat 27 ft pattern for 2 weeks in my singles league, I got a 30 year old black diamond out of my garage, and beat my previous high in the league by about 100 pins over 4 games. I had tried polished urethane and plastic on the pattern, but the old hard rubber ball handled the carry down way better than the other stuff. Guess I will add the Black Diamond to my short oil tournament arsenal.