NRL chief executive Todd Greenberg has said the code is open to independent doctors and are looking at the idea of an 18th man to deal with concussions in the game.
Speaking on the Fox Sports' League Life, Greenberg was reluctant though to suggest sweeping changes were needed but did admit that the incidents in Round 3 were some of the worst he'd seen in recent years.
“The incidents that I saw in round three were far more disturbing for me than others,” Greenberg said.
“I haven’t seen incidents as difficult to watch as I saw ... particularly around those three that were issued breach notices where players were laying motionless on the ground.
“At some point, I felt the game had to make a statement and we did.”
The NRL recently handed out fines of $350,00 to three clubs for breaching the concussion rules earlier in the season.