The AFL needs to open debate about introducing a red card system, according to Adelaide forward Josh Jenkins.
He says he's not opposed to the code introducing the send off after watching Port Adelaide lose Robbie Gray to a crude tackle on Sunday.
Gray was knocked out in a sling tackle by Fremantle's Ryan Nyhuis, who has been reported for rough conduct.
The Port forward was unable to return to action after being knocked out, leaving his team two players down in their nine-point loss to the Dockers in Perth after ruckman Paddy Ryder suffered a game-ending hip injury.
Despite losing Gray, Port's assistant coach Brendon Lade doesn't believe a red card system is required in the AFL.
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"Soccer do that ... we are AFL," Lade told reporters on Monday.
"Everyone has got their opinion ... I don't think we need it."
But Adelaide's Jenkins says Port were severely impacted by losing Gray, as were Brisbane when Harris Andrews was knocked out by Greater Western Sydney's Jeremy Cameron in an act which resulted in the Giants foward being banned for five games.
"When you see a Harris Andrews or Robbie Gray get their game ended ... it affected Port big-time yesterday," Jenkins told reporters on Monday.
"They already had an injury to a key player (Ryder) and irrespective or not whether you consider the player that is injured be one of the best or worst players, you're still down (a player).
"I looked at the stats last night, Port only used about 50 rotations ... so it has a big impact.
"So it (a red card system) is something worth talking about. I think it should be discussed."
Jenkins suggested a red card for an offender could be tied to the time spent off the ground by the victim.
"You could link it up with 'you can't come back until that person that is injured comes back'," he said.
"There is a lot to work through I guess but I'm not opposed to it."
