Fremantle ruckman Zac Clarke has committed to the AFL club to the end of 2015.

The Dockers announced on Monday that the 23-year-old had signed a two-year contract extension.

Clarke has become increasingly important to Fremantle this season following injuries to Aaron Sandilands and Jon Griffin.

He said in a club statement he had flown to Melbourne and spoken to family before re-signing with Fremantle.

“But in the end, the way the team is going, and the coaches and playing group we have, it really wasn’t a tough decision,” he said.