The Arizona Diamondbacks exceed expectations year in and year out. They are led by All-Star Ketel Marte, along with a flurry of talented pitchers. That core will try and bring the Diamondbacks their first title since they took down the New York Yankees in the 2001 World Series. Shop our authentic selection of autographed Arizona Diamondbacks collectibles & memorabilia including signed baseballs, photos, jerseys, bats and more. Certified Authentic.