Port Adelaide are urging fans to buy into their "brave" decision to go with co-captains for the first time in the club's history.
Tom Jonas and Ollie Wines will share the captaincy for the 2019 season, taking over after Travis Boak stepped down at the end of last year.
Wines had been expected to take the post on his own after being vice-captain under Boak, who had been skipper for the past six years.
Half-back flanker Hamish Hartlett takes over from Wines as vice-captain in a streamlined three-man leadership group.
Coach Ken Hinkley concedes it is a controversial move by the Power, breaking with 149 years of tradition.
"It's a really brave decision to come up here today and say we think this is the right model; I am asking our fans and our members to be equally as brave and support these two boys," he said. "They will do them incredibly proud right through the next part of this football club's history."
Port's former captain Warren Tredrea was among those opposing the move, posting on social media that he had never liked the co-captaincy model.
But key defender Jonas feels it will work out, saying: "Ollie and I have strengths that complement each other; in this day and age, two can be better than one.
"I'm really eager to work beside Ollie and share this moment, but have many positive moments going forward."
Wines, who was joint-second in the Power's best and fairest last year along with Jonas, had been vice-captain of the club for the past two seasons.
The 24-year-old, who has signed a four-year extension until 2022, said he was "over the moon" to be named co-captain.
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