Matthew is the elder brother of Josh Carr, who also played for Fremantle and they both attended Corpus Christi College in Bateman, Western Australia.
[1] Carr was traded to Fremantle at the 2000 AFL Draft by St Kilda in exchange for Craig Callaghan.
From the 2006 season onward, Matthew was generally used in a utility/tagging role, often given the assignment of playing against the opposition's best midfield player.
He was generally very effective in that role and finished the 2006 season having played every game for the Dockers, including three appearances in the 2006 finals series.
However, throughout 2006 and 2007 seasons, injuries and fitness concerns continued to hamper his game and, although a serviceable player, he never returned to his earlier form.