Brisbane defender Jack Frost has retired due to concussion.
Frost has been concussed 14 times in his career, which spanned 56 games for both Brisbane and Collingwood, and has made the decision to retire immediately.
“I’m on an emotional rollercoaster at the moment which I’m sure will subside with time,” he told Brisbane's website.
“I have days where I feel okay and have accepted the fact that I can no longer play but I also have days where I get quite frustrated and upset that this is how it has ended.
“I’ve always played with the people I love most in mind and to hear their support recently has really tugged at the heart strings.
“No one wants their career to end, let alone like this and it certainly wasn’t how I expected it to finish.
“I do, however, value my health and the rest of my life and if I can be healthy and avoid further damage to my head it’s a no brainer, pardon the pun."
Brisbane's general manager of football David Noble said Frost's health was his highest priority.
“Jack’s character, values and team first attitude was what attracted us to him initially,” he said.
“Jack is a natural competitor whose passion for the game can never be questioned, but his health and wellbeing is of our highest priority.
“He has been brave and strong willed during a challenging time in his career and has never wanted to let his teammates down. He is a great team man loved by all at the club."