On Tuesday’s episode of HBO’s Real Sports With Bryant Gumbel correspondent Jon Frankel previewed an upcoming segment about the domestic violence scandal plaguing the NFL and a possible link to repeated head injuries sustained on the field.

In the piece, airing Oct. 21, Frankel sits down with Chelsea Oliver, the widow of former San Diego Chargers safety Paul Oliver.

She appeared on the show to discuss her husband’s acts of domestic violence and how, following his suicide a year ago, experts from Boston University discovered Oliver had an advanced form of chronic traumatic encephalopathy (CTE), which has been linked to mood swings and violence.

Oliver’s family is suing the NFL for wrongful death. Last year, Oliver committed suicide at the age of 29.

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