Evan Gattis Autographed Rawlings 2017 WS OML Baseball- TriStar Authenticated This is an Evan Gattis hand autographed 2017 World Series Rawlings Official Game Ball Major League Baseball. This item has a TriStar Authentication, which comes with a TriStar numbered hologram and a TriStar Certificate of Authenticity. You can view this item on the TriStar website and it shows when and where the item was signed. It was signed either at a public autograph appearance or a private signing. This is a stock photo of the item. Although you may not receive this exact item, the item you receive is virtually identical, brand new, and in great shape.