Why did coach Jon Gruden resign from Las Vegas Raiders?
Raiders coach Jon Gruden resigns after more offensive emails become public
ESPN - Jon Gruden released a statement following his resignation as Raiders coach.
Jon Gruden Resigns as Raiders Coach After Email Scandal Rocks NFL –
Jon Gruden emails labelled 'disturbing', 'ignorant' and 'a distraction' after Las Vegas Raiders head coach resigns, NFL News
Brian Flores' lawsuit shines a brutal light on the NFL's hiring practices
Answers to Key Questions About Jon Gruden's Emails - The New York Times
Jon Gruden resigns as Raiders head coach after racist, homophobic emails surface
NFL Network: 'It's official. Gruden is out in Las Vegas' after NY Times investigation reveals new emails