It doesn't happen often that a head coach breaks his own news, but it happened on Sunday evening.
Del Rio led Oakland to a 6-10 season this year after going 12-4 last year and making the playoffs for the first time since 2002.
"He told me he loved me and appreciated all I did to get this program going in the right direction, but that he felt the need to change", Del Rio said.
For the past near decade, Gruden has been an ESPN analyst, with constant rumors around where and when he would return to the game.
2 dead in California workplace shooting
Authorities told the Press-Telegram in Long Beach that multiple people were transported to Long Beach Memorial Medical Center. By 3:30 p.m., police said there was no longer an active-shooter threat at the location.
But star quarterback Derek Carr regressed under first-year offensive coordinator Todd Downing, and Ken Norton, Jr. was sacked as defensive coordinator after 10 games.
Del Rio's Raiders ended the season with a massive thud, losing 30-10 in Los Angeles.
This year...ugh. Carr wasn't great.
Del Rio finished his third season as the team's head coach.