Tiger Woods is exclusive with Upper Deck Memorabilia and Tiger rarely signs things on the golf course. Just do a search on eBay for Tiger Woods items and you will find TONS of fake Tiger Woods signed items. Tiger Woods charges a very high price to sign items and Upper Deck is glad to pay it. Some of the Tiger Woods pieces they carry are almost $3000 and normal autograph Tiger Woods 16X20s are over $1000 each.

Tiger Woods has a very unique signature and it is hard to duplicate. But if someone tells you they got Tiger to sign a golf ball at an event, they are probably lying, he allegedly won't sign golf balls in public.