With so many professional athletes in jail or on trial for crimes of sex and violence, cynics have joked that the diamonds on the Super Bowl ring should be replaced by a tiny set of shackles. So what allegedly happened on April 9, 2000, in a suburban Milwaukee, Wis., home would have been part of the familiar litany of testosterone and ego-fueled misbehavior--were it not for the reputation of the accused.
As the 17-year-old accuser's story goes, the football star arrived at a post-prom party of Roman Catholic high school students at 3:30 a.m. and, according to the complaint, appeared "really...