No the darkside is NOT a PBA approved ball although I cannot understand why as it is ABC approved and made by a company whose products are allowed on the PBA tour. I had a Track staffer in my shop during a Tour Stop a few months back and he was curious about the ball as I had them and he had never seen them..he made a few calls and found out that he would not be able to use it as it was never "officially" released. Perhaps regionals have different regualtions but I doubt it..I'd e-mail or call your regions director and find out for sure.