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The book, "Breaking Free," chronicles Walker's life with the disorder, according to the book's publicist at Simon & Schuster.

That Walker, who won the Heisman Trophy and a national championship while playing tailback at Georgia in the 1980s, has the disorder was surprising to his former Georgia teammates, as well as his former coach.

"I'm probably one of his closest friends and that's news to me," said Frank Ros, a Coca-Cola executive who played linebacker and was captain of Georgia's 1980 national championship team. "I knew he was working on a book but I just thought it was about football. He does 100 things at once and always has projects going on — but that blows me away."

Said his former coach, Vince Dooley: "That's all news to me. More>>

Which brings me to this repugnant news from (where else?) New York.

An art gallery wants to unveil a memorial depicting fallen Kentucky Derby winner Barbaro near Central Park this spring, close to where a carriage horse died after it was spooked by a street musician's drum and ran into a tree.

The sculpture, by controversial artist Daniel Edwards, depicts Barbaro on his back, a No. 8 saddle cloth draped over his belly and his hooves in the air, according to a statement from the Leo Kesting Gallery.

Barbaro, who shattered his right hind ankle in the Preakness in May 2006, was euthanized on Jan. 29, 2007, after a long fight to save his life.

His death seemed to transcend horse racing, as people of all ages who never before had given a second's thought to the sport (or its sometimes tragic underside) were seized by grief. More>>