"A pair of cleats
on a power line is about the most Marshawn way
of announcing his retirement. Even right down to
the timing. Lynch doesn't need a spotlight. There
are 120 million people watching the Super Bowl
and amid it all, he just posts a photo, an emoji
and that's it...."
http://www.sbnation.com/nfl/2016/2/7/10934536/marshawn-lynch-retirement-seahawks-nfl