Shannon Sharpe grades Dak Prescott's performance a 'F' vs. the Bills ' NFL ' UNDISPUTED

Shannon Sharpe and Skip Bayless grades Dak Prescott's performance after the Dallas Cowboys' fell 26-15 to the Bills. Hear why Shannon gave Dak a 'F' for his performance in the Cowboys' loss.

National Football League Dak Prescott Dallas Cowboys Buffalo Bills Skip and Shannon: Undisputed