The Blues have done what many among their loyal support may have thought impossible this season, and have claimed a famous scalp not by the "rugby chaos" that the Lions were expecting at Eden Park, but by a ruthless adherence to the basics.
The chaos was there all right, and especially in the winning of this match which came via flat-out brilliance from the Steven Luatua and Sonny Bill Williams, superb both, and Ihaia West, the replacement first-five who received Williams' offload and set off for the posts like a startled rabbit.
And there was luck before this, yes. The Blues probably owe a debt of gratitude to television match official Marius Jonker, who was involved in deciding the first three tries of the match, plus he had a hand in the sinbinning of Liam Williams for his second mid-air challenge on Matt Duffie.
But while Lions coach Warren Gatland might have let slip a few more expletives at the decisions, and this result which puts his team's tour into a rather deep hole only two games in, a neutral couldn't find fault with them.
Jared Payne was over early for the visitors but the try was ruled out for a leg in touch, and Sonny Bill Williams' try was awarded after Jonker decided a red hand knocked it back rather than a Blues' hand forward.