Fremantle defender Antoni Grover has agreed to a one-year contract extension on top of his current deal, tying him to the AFL club until 2010.

Grover has played 146 games for the Dockers since making his debut in 1999, cementing himself as a key defender in the club's defence.

The 27-year-old was runner-up in the club's best and fairest count in 2007 and is just four games away from earning life membership at the club.

The signing of Grover comes a day after youngster Garrick Ibbotson also agreed to a one-year contract extension that secures his services until the end of 2010.

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