Agassi said Thursday only he, Graf and the winner know what picture he showed on his cell phone, so "everybody's pretty relaxed."
Agassi spoke after receiving an official invitation to the International Tennis Hall of Fame.
Agassi was part of the auction earlier this month when he was in Taiwan for an exhibition tennis match. While hawking a plate, Agassi said a winning bidder who paid more than $4,000 would get to see a picture of his wife naked.
The chief executive of a Taiwanese porcelain manufacturer says he won the auction, but isn't 100 percent sure the nude back he saw in the photo belonged to Graf.