Calvin ended the 2019 season with a bang, not only capturing the win at the National Tour finale event, but also securing the title for the PDGA National Tour points series. We have added this commemorative bottom stamp to his Tour Series Star Destroyer to celebrate this incredible achievement. Each disc is a unique blending of colors, no two are the exact same. A substantial portion of each sale will benefit Calvin and his touring efforts. These discs are bottom-stamped only.