One of the players who left the Dolphins as a free agent earlier this year abruptly called it a career this week.

Seattle Seahawks center Connor Williams has unexpectedly decided to retire at 27 years old, walking away from the team with eight games left this season. Coach Mike Macdonald said Friday the seven-year veteran made the decision earlier this week for "personal reasons.

Williams retiring nine games into the season adds to Seattle’s black-hole situation at center the last 10 years.