![Injury to Jake Spencer has left Melbourne with a parlous ruck situation.](/web/20170425034908im_/http://www.theage.com.au/content/dam/images/g/v/r/n/2/d/image.related.landscape.460x307.gvrkou.png/1493072013666.jpg)
Ruckless and luckless, the Demons need to be inventive: Goodwin
Melbourne will have to think laterally to come up with a contingency plan to deal with another injury to a ruckman, said coach Simon Goodwin, after second ruck Jake Spencer suffered a shoulder that is likely to sideline him for some time.