Christian graded his contact on the Bulldogs utility as careless with high impact and high contact, resulting in a two-match suspension.
Adelaide midfielder Crouch was charged with rough conduct after a block which stunned Melbourne onballer Clayton Oliver in their Saturday fixture.
Crouch was offered a $3000 fine, reduced to $2000 with an early guilty plea, with Christian ruling it was careless conduct with low impact.
Lions skipper Zorko was fined $4000, reduced to $2500 with an early guilty plea, for misconduct.
Zorko pushed Port Adelaide’s Kane Farrell near a boundary line, with Farrell colliding with a trainer on the other side of the boundary.
The incident was a fourth misconduct offence for Zorko, leading to a maximum $4000 fine.
Brisbane’s McFadyen was cited for rough conduct against Port’s Dan Houston in their Moreton Bay pre-season game.
Christian rated McFadyen’s contact as careless, low impact and high contact, resulting in a $3000 fine, reduced to $2000 with an early guilty plea.