Financial terms for the book, currently untitled, were not disclosed, although a publishing official with knowledge of the negotiations said bidding reached at least $1.3 million. The official, citing the confidentiality of the negotiations, declined to be identified.
Williams, 26, has won nine Grand Slam titles and, with sister Venus Williams, won a gold medal in women's doubles at the recent Olympics in Beijing.
Grand Central Publishing is a division of the Hachette Book Group.
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