Aug 29, 2015; Arlington, TX, USA; Dallas Cowboys receiver Dez Bryant yells while on the sidelines during the game against the Minnesota Vikings at AT&T Stadium. (Matthew Emmons-USA TODAY Sport …

Aug 29, 2015; Arlington, TX, USA; Dallas Cowboys receiver Dez Bryant yells while on the sidelines during the game against the Minnesota Vikings at AT&T Stadium. Mandatory Credit: Matthew Emmons-USA TODAY Sports