In typical taciturn Lynch style, he simply tweeted a peace emoji with a picture of his cleats suspended from a telephone wire, suggesting he's hanging them up for good.
It was just a year ago that Lynch was drawing raves as the best running back in football after leading the league in rushing touchdowns for two consecutive seasons.
The driving force on one of the best rushing attacks of the 21st century, Lynch was also the tone-setter for the most successful era in franchise history.
The Seahawks have long been blessed with dynamic running backs, from Curt Warner in the 1980s, through Chris Warren and Ricky Watters in the 1990s to Shaun Alexander last decade. Even if Alexander's Seattle peak lasted longer, Lynch offered more memorable moments, highlighted by his famous "Beast Quake" breakthrough in a playoff upset over the Saints.