The Spin disc from MVP Disc Sports was PDGA Approved as of 1-20-2016.

"The Spin is an understable putter that will debut in the 2016 Circuit Event Series. It has a deep profile the like the Ion and Anode, which makes it great for glide-filled lofty flights. Its controlled understability makes it suitable for both new and advanced players alike. Those who participate in the 2016 Circuit will have the first chance to try out the Spin, as well as other new forthcoming models in the Circuit Event Series.Registration is now open for the 2016 Circuit Events, and we encourage all clubs and organizations to introduce new players to disc golf by hosting a Circuit Event this year. Register Your Circuit Event Here." - by MVP Disc Sports