Zac Smith has been outstanding since he jumped high at the first NAB Challenge centre bounce and palmed the ball to Patrick Dangerfield.

He has only elevated his status since, kicking four goals and averaging 11 disposals a game.

His efforts forward have been impressive and he has had a positive impact on the Geelong midfielders' confidence. 

Rhys Stanley has been less consistent but showed some signs against Port Adelaide that he could turn a game if he gets it all together.

He has taken eight marks inside 50 but is averaging just nine disposals a game despite spending more time in the ruck than Smith. 

Mark Blicavs is the 'break in an emergency' option as a ruckman.

He has played as a big-bodied midfielder and has been impressive. He averages 18 disposals a game and is a tackling machine, making 32 tackles in five games (including 12 against Port Adelaide) to be inside the top 20 for that statistic this season. 

Nathan Vardy and Mitch Clark have battled injury but could also step into the breach if required.

Average minutes per game spent in the ruck in 2016
1. Zac Smith (56 minutes, five games)
2. Rhys Stanley (65 minutes, five games)
3. Mark Blicavs (Two minutes, five games)