Who would have believed little more than a week ago the racing could be so good? The idea of catamarans hurtling around a short harbour course was far removed from the stately ocean sailing that characterised the America's Cup for so long.
It was hard to imagine that 25 minutes of hydroplaning on a wing and foils would provide an absorbing contest. The comparison with Formula 1 motor racing seemed all too apt: a high-speed procession from start to finish.
That is the way it was, too, in the challengers' series, disappointingly contested by just three entries and won too easily by Emirates Team New Zealand. But as soon as they went head-to-head with Oracle last Sunday, Sir Russell Coutts was proven right: it is a spectacle.
It helps, of course, that Team NZ is winning. Correction: it means everything that Team NZ is winning. If Oracle produce something new this morning and begin to turn the tables, the format's critics will come to the fore again. But they could not then call it boring.
Team NZ goes into today's races so far ahead that only a serious breakage may stand between them and victory, which could come as early as the first race tomorrow. It might not be tempting fate too much to start imagining what the return of the America's Cup would mean for New Zealand.