Green Jacket Auctions is offering $10,000 to the new owner of the ball thrown by Rory McIlroy following his victory in the Open yesterday.
The champion threw the ball into the crowd after the 18th hole - meaning one lucky fan may have hit the jackpot.
Memorabilia pertaining to McIlroy is likely to rise further in value should he secure a grand slam by winning the Masters next April.
Take a look at all our golf memorabilia here.
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