IMAGE: North Melbourne's Jack Ziebell is taken from the ground after he was knocked out against Richmond at DocklandsGetty Images: Robert CianflonePosted Sat 21 Mar 2015 at 6:10amSaturday 21 Mar 2015 at 6:10amSat 21 Mar 2015 at 6:10am Jack Ziebell of the Kangaroos is taken from the ground after he was knocked out during the AFL preseason match between the Richmond Tigers and the North Melbourne Kangaroos at Docklands on March 21, 2015.(Getty Images: Robert Cianflone)ShareCopy linkFacebookX (formerly Twitter)More on:MelbourneVICAustraliaSportAustralian Rules Football