The GIANTS will challenge defender Lachie Ash's one-match suspension for rough conduct at the AFL tribunal.

Ash was charged with rough conduct for his tackle on Docker Hayden Young in the second quarter of the GIANTS' win on Saturday afternoon.

The incident has been graded as careless conduct, medium impact and high contact, with Ash offered a one-match suspension.

The GIANTS have confirmed they will challenge the suspension a the AFL tribunal on Tuesday night.

The GIANTS’ win over the the Dockers saw the GIANTS secure a finals berth and a top-four spot ahead of the final game of the home and away season.  

The GIANTS take on the Western Bulldogs at Mars Stadium in Ballarat on Sunday at 12:30pm.