Burgeoning Fremantle tall Jon Griffin says it is a money can’t buy experience learning from arguably the competition’s best ruckman, Aaron Sandilands.

Fremantle’s ruck stocks are in good hands with Sandilands, a four-time All Australian and Griffin both re-signing.

Griffin said learning from the Doig Medalist was priceless.

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“It’s great to have Aaron,” he said.

“He’s a fantastic mentor for me.”

Griffin said Sandilands had been in terrific form, after he broke two VFL/AFL ruck records in as many weeks.

“His last two weeks have been outstanding,” he said.