Fremantle defender Paul Duffield has agreed to a contract extension that sees him commit to the club through to the end of the 2015 season.

The experienced defender has played 133 games since debuting against St Kilda in round 5, 2006 in the game infamously dubbed ‘Sirengate’.

Duffield, who was an integral member of the AFL’s best backline in 2013, was out of contract at the end of this season.

Grassroots: Duffield and Fyfe return to Aquinas