Matthew Primus has officially coached his last match at Port Adelaide with Garry Hocking appointed as the club's caretaker coach for the remainder of the 2012 season.
The Power announced on Monday morning that they would not proceed with an optional third year in Primus' contract, with the former ruckman deciding not to coach the rest of the season out.
Primus said that he accepted his fate, although he was disappointed with the club's decision not to renew his contract.
"I thank the Port Adelaide Football Club for the opportunity to play and to coach," Primus said in a statement.
"It hasn't worked out the way I wanted. I had a plan to become a successful team and I won't get the opportunity to see it through.
"I love the club and I love the game, and while I won't get the opportunity to see that through with Port Adelaide I hope that I will somewhere else."
Club president and director Brett Duncanson has also stood down as the fallout continues from Saturday's shock 34-point loss against expansion team Greater Western Sydney on Saturday.
Duncanson will leave his position at the AGM in December, agreeing to stay for the rest of the year at the request of the Power's board.
Port will begin their search for a new senior coach immediately.