 Columbia 300 pro staff members include PBA Tour champions Scott Norton, Tom Hess, Josh Blanchard and Jakob Butturff, plus PWBA and international champions Clara Guerrero, Missy Parkin and Diana Zavjalova.Columbia Industries purchased the Track and Dyno-Thane bowling ball brands in the early 2000s.In February 2007, Columbia announced that all of its brands had been acquired by Ebonite International.