The result was a shock and awe display from the All Blacks, who scored six tries to two, the final one to Steven Luatua, who scored under the posts in the final minute to allow the scoreboard to tick over 50.
McCaw was sinbinned in the first half, but the Wallabies could score only a penalty in his absence. By contrast, when lock Rob Simmons was sinbinned for Australia on McCaw's return, the All Blacks poured on the points with two converted tries - the first a penalty try when they obliterated the visitors' scrum, and the second a thrilling long-range breakout by Julian Savea.
McCaw, who scored two tries, was at his outstanding best - carrying that "edge" he talked about through the whole test. Kieran Read scored the other.
From the power of the pack to the excellence of the backline, it was the All Blacks' most complete performance of the year.
They have held the Bledisloe Cup for 12 years, Australia's winning drought at Eden Park now standing at 28 years.
For the All Blacks' supporters on that mild August night, the occasion could hardly have been better.
All Blacks v Wallabies - more coverage:
Forwards deliver at Eden Park fortress
Cruden now ahead of Carter?
All Blacks v Wallabies - as it happened
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