Great ball from one of the best young pitchers in the game today and he's just getting better and better every year. Buy it now while you can get a great deal before he starts winning the Cy Young that's in his future. Coa from C+L Sports to guarantee authenticity and from my dealings with them in the past I know they are reliable and professional. As always though, I guarantee every item I sell 110% authentic and i'm just an email or phone call away from anything you need in the Sports Memorabilia World. From past, present and future authentic sports items I want to be the first one you call.