Yes, Kam Chancellor's Seahawks goodbye was jolting.

The soul of the team detailed in his open letter online Sunday the risk of paralysis had he continued playing. And it asked for prayers, because "I have no clue how these head injuries will go after the game."

Yet the four-time Pro Bowl strong safety calling it quits—while not officially using the word "retiring," to preserve his contract guarantees for this year and next—was not a surprise. Not to the Seahawks.

They've been planning for this for more than a year.

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