All players have been warned in the lead up to the new season about the importance of tackling below the shoulders, and while all the yellow and red card decisions will be debated by critics, the referees appeared to get them right. The Higginbotham decision appeared harsh at first viewing, but there is definite shoulder-to-head contact and he could face further sanctions after appearing in front of the judiciary.
The Boshier/Crotty penalty try incident, described as "ridiculous" on social media, was one of the more clear-cut of the weekend, and while it might have appeared harsh to some, referee Ben O'Keeffe was right on all counts.
And players from all 15 teams may want to heed the advice of Blues assistant coach Rogers when he talked of the defensive challenges they faced in the modern game.
"Line speed is such a big thing now and defenders have to stay tall to close the gap before they dip at the last moment - it's a real skill," Rogers told the Herald. "Not many people can do it – [loose forward] Dan Lydiate from Wales is one.
"We have to go back to the drawing board and try to teach that. From a safety point of view the officials are right. It's about foot work – closing the gap and dipping or bending at the knees to make the tackle."
Of Kiri Kiri's tackle on Sopoaga, originally deemed okay by referee Jamie Nutbrown before the television match official intervened, Rogers said: "He was coming around the corner quite quickly and from our perspective hit the shoulder and slipped up. There was no intent in it – it was one of those situations I guess… [but] player welfare is paramount and we have to do the right thing."
Roll of dishonour – cards for dangerous tackles over weekend
Yellow: Antonio Kiri Kiri (Blues), Lukhan Tui (Reds), Michael Alaalatoa (Crusaders), Lachlan Boshier (Chiefs), Pierre Schoeman (Bulls).
Red: Scott Higginbotham (Reds)
To get the day's top sports stories in your inbox, sign up to our newsletter here