Veteran Blue calls time on AFL career

Carlton defender Michael Jamison has played his last game for the Blues, the veteran full-back announcing his retirement from AFL football in an open letter to fans on Monday.

Jamison, 30, played 150 AFL games for Carlton after joining the club as a rookie ahead of the 2007 season, but he managed just five matches this season after battling illness and spending time in the VFL.

In a letter published on the club's website, he said it was with a heavy heart that he would join teammate Andrew Walker in announcing his retirement this week.

"In recent times I have found it increasingly hard to prepare, both physically and mentally, for the rigours of the sport," Jamison wrote.

"Being a representative of our football club demands an individual give nothing short of 100 per cent and I've come to the realisation that I can no longer sustain the intensity required to play AFL.

"I hope that I've been able to do the guernsey proud."