Signatures include: Paul Azinger, Chad Campbell, Stewart Cink, Ben Curtis, Jim Furyk, J.B. Holmes,Justin Leonard, Hunter Mahan, Phil Mickelson, Kenny Perry, Steve Stricker & Boo Weekley. Every golf signature has been obtained at golf tournaments all around the country and witnessed by a member of the Palm Beach Autographs staff. This item was hand signed by the athletes and is accompanied by a Certificate of Authenticity from Palm Beach Autographs. A tamper-evident hologram will be affixed to the item. Signed items are guaranteed to pass any third-party authentication with 100% Money Back Guarantee.