Someone just posted about it on the front page but you'd have to think this is the first time a Wallaby squad has ever been picked without a single Reds player in the backline.
I guess they boycotted the team once but that must be it.
Off-hand, I reckon you might find some examples back in the sixties, when NSW dominated selection, with a Queenslander or two in the forwards. Jules Guerrasimoff in particular was always there or thereabouts. Stu Gregory got a few caps.
Catchpole at half, Hawthorne at fly-half, Beres Ellwood at inside centre, one of the Boyces at outside centre, the other on the wing with Michael Cleary. Lenehan at FB. Dick Marks was the first long term Queensland backline player during the sixties, IIRC. Bob Honan played for a while before switching to loig. Harry Roberts played a couple of times.
An old mate of mine, Bob Potter, was selected for one Test, he played on the wing against Fiji, marking Joe Levula. He still has the newspaper clippings, his favourite being a story in the Sydney Sun headlined "Bob Who?"
In those days there were only one or two interstate games, and Test match preparations were limited to 24 hours! So it is pretty natural that the national selectors tended to favour players from the stronger, more established, state team.