Conversation so far:
What was Dick Williams' final season in uniform?
Dick Williams was fired on June 8, 1988 with Seattle 23–33 and in sixth place. It would be his last major-league managing job.
did something happen in 1986 that caused Dick Williams to retire from playing?
The Padres fell to third in 1985, and Dick Williams was let go as manager just before 1986 spring training.
Was Dick Williams to blame for the Padres' losses somehow?
As of 2011, Dick Williams was the only manager in the team's history without a losing season. His difficulties with the Padres stemmed from a managerial power struggle.

Question: Who did he play for at that time?
Self-contained rewrite: Who did Dick Williams play for in 1986?