Jack Grimes has stood down as co-captain of AFL club Melbourne, opening the way for Nathan Jones to assume sole possession of the skipper's role in 2015.
Grimes says it was a difficult decision, having shared the captaincy since 2012, when he was 22.
"Captaining this club was something I was and will always be very proud of," he said in a statement on Monday.
"This has been a hard decision, which I have spent considerable time thinking about during the off-season.
"During this period, I have spoken to a number of people I trust and I appreciate the support of the club in respecting this decision.
"There is no doubt my leadership has evolved and developed during my time as co-captain.
"However, clearly on-field is the most important aspect of leadership, and my own on-field performance needs to improve.
"By removing the co-captaincy role, I believe I can use all my mental and physical energy into improving my on-field performance, which will be the best thing for myself and the team."
The Demons have yet to formalise their captaincy and leadership structure for 2015.
But Jones, who was promoted to a co-captain's role this year and went on to become only the third Melbourne player to win three successive best-and-fairest awards, is favourite to be appointed the sole skipper.