LARRY ELLISON'S America's Cup team was down 1-8. New Zealand needed just one more win. Oracle ultimately beat back the odds in what's been called the greatest comeback in sport. But was it? G. Bruce Knecht set out to investigate how Oracle turned things around and, most particularly, the source of extra horsepower that seemed to come from nowhere during the final races. What he discovered was that the team was using a sailing technique that was prohibited under the rules. The Comeback is a pulse-pounding account of Oracle's desperate stop-at-nothing campaign.