The Dragons have lost a player to the sin-bin in three of their last four games after Cam McInnes was binned against Parramatta on Saturday on the back of a 7-0 penalty count. 

Lock Jack de Belin was also binned for repeat infringements in the Dragons win over the Cowboys in round 19, with both matches overseen by referee Adam Gee.

Fullback Matt Dufty was also dispatched against the Warriors last week, though it was deemed a professional foul. The Warriors conceded six straight penalties in the second half of that match, the bulk in their own 20-metre zone, as they looked to protect an 18-12 lead, but didn't lose a player.

McGregor was tempered in his reaction after the loss to the Eels but questioned the consistency of use of the sin-bin. When asked if he's ever been on the wrong end of  a 7-0 penalty count McGregor said: “I've seen five and Jack de Belin ended up in the bin three weeks ago.

“Last week their were six straight against the Warriors and no one went to the bin. So no is the short answer. I'm not going to go into it too much more than that. I'm going to have to take a closer look at it. We lost one with the same referee three weeks ago in North Queensland.

“We've got to make sure we do something about our discipline if it's on us. That's one side of the game, there's other sides of the game we can fix. There's other things from the game we need to be better at, and we'll all take ownership of that.”

McInnes was quick to do just that, putting his hand up for the binning when his side trailed 10-0.

“There were no warnings but, obviously, with that many penalties they're going to make a decision there,” McInnes said.

"Myself, I need to be better there, in that part of the field as well there's no reason to give away that penalty.

“That's just part of our discipline and some of the crucial errors that were off tonight. I made a couple of errors there and that penalty really hurts a side so, individually, we need to have a look at ourselves.”