TAIPEI, Taiwan (AP) — The man who won an auction to buy a plate from Andre Agassi and see a naked picture of the tennis great’s wife said Tuesday he is not 100 percent sure the nude back in the photo belonged to Steffi Graf.

Agassi took part in the auction while he was in Taiwan earlier this month for an exhibition tennis match. Standing on stage holding up the plate, Agassi said: “You pay more than $4,000, and I will show you a picture of my wife — on my phone — naked.”

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Franz Chen, CEO of Taiwanese porcelain manufacturer Franz Collection Inc., says he won the auction and that in exchange for the equivalent of $7,000, Agassi showed him a photo of the naked back of a blonde-haired woman.

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Agassi won eight Grand Slam singles titles in his career, while Graf won 22. The two married in 2001 and have two children.

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