The cases were referred Friday to Senior U.S. District Judge Michael R. Barrett after lawyers for OSU and the men couldn't agree on a mediator.
The plaintiffs suggested the mediation teams used in cases involving Michigan State and Penn State. OSU had recommended a former federal judge or a federal appeals court mediator.
Lawyers on both sides shared little reaction, saying only that they look forward to working through mediation with Barrett.
A law firm is investigating the allegations for Ohio State.
The doctor , Richard Strauss, died in 2005. No one has publicly defended him.
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