Dallas Cowboys owner Jerry Jones reiterated his belief that there is not yet enough evidence to prove a definitive link between football and head trauma, SI's Greg Bishop and Michael McKnight write in their special report "Football In America."

November 16, 2016

Dallas Cowboys owner Jerry Jones reiterated his belief that there is not yet enough evidence to prove a definitive link between football and head trauma, SI's Greg Bishop and Michael McKnight write in their special report "Football In America."

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