Griffin, who was part of Melbourne's 2017 grand final triumph, said he was "shattered" to call time on a career severely hampered by four knee reconstructions.

His last game was 18 months ago for the Newcastle Knights and without a contract for 2020 he announced in a social media post that the time had arrived to switch focus.

"I'm shattered the curtain has come down on what could have been. But I'm very grateful for what I was able to achieve," he said.

"I'll be forever in debt to the game and people of rugby league. It threw some curve balls at me but I accomplished things I thought were only possible in dreams."

Griffin played 25 games across five seasons at the Storm, primarily as a backup to Cameron Smith, and enjoyed a run of 16 successive starts for the Knights in 2018 before suffering another serious injury.

He made his New Zealand Test debut a week before his final game, in the loss to England in Denver.

Australian Associated Press