Talented, young Richmond defender Dylan Grimes has undergone surgery to repair the tendon in his left hamstring.

Grimes damaged his hamstring during last Friday’s training session at Moorabbin, and the Tigers’ medical staff subsequently discovered a small split in the tendon.

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“Given Dylan’s history with hamstring injuries, we believe surgery was the best option,” said Richmond’s Elite Performance Manager, Peter Burge.

“We won’t know the extent of his recovery time until it settles from the surgery.

“Despite the setback, Dylan is keen to start his rehabilitation and is hopeful of being ready for the start of the 2013 season.”