The Santa Clara County District Attorney's Office said the 49-year-old, a former defensive lineman for the Ninerss and Oakland Raiders, allegedly assaulted the woman at his Morgan Hill home after interviewing her for a babysitting job.
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After a nine-month trial, Stubblefield was found guilty of rape by force, oral copulation by force and false imprisonment. The jury also found that he used a gun in the assault.
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"Stubblefield was found guilty of the rape of a person incapable of giving consent, and oral copulation of a person incapable of giving consent," officials said in a statement.
After the verdict, he was remanded to jail without bail, pending sentencing. He faces 15-years-to-life in prison.
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"This was a triumph of resilience," District Attorney Rosen said." The victim has struggled her whole life with learning disabilities and challenges to be self-sufficient. If we are not fighting for her, then who are we fighting for? It has been a long road for this remarkable woman and we are thankful to the jury for providing her some closure and, for our community, justice after an unconscionable and violent crime."
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On the afternoon of April 9, the victim, who was 31-years-old at the time, traveled to Stubblefield's home after he contacted her through a babysitter website.
After the assault, the victim immediately went to the Morgan Hill Police Department to report the crime.
VIDEO: Dana Stubblefield charged with raping a disabled woman inside his home in Morgan Hill home
Ex-49ers star Dana Stubblefield accused of raping disabled woman