AmericaOne and Prada must wait at least one more day to break their 3-3 tie in the challenger final after today's race was postponed by light wind.
The seventh race of the best-of-nine series was rescheduled for Friday, when wind of 15-20 knots is forecast.
The winner of the round meets defending champion New Zealand in a best-of-nine series starting Feb. 19 for the America's Cup, the top prize in sailing.
After four races in wind from 15 knots to 30 knots, the breeze on the calm Hauraki Gulf course off Auckland was less than 5 knots at today's scheduled starting time. The third postponement of the series was announced after a 58-minute delay.
The opening of the series on Jan. 25 was delayed by heavy wind and rough seas. The American and Italian boats split the next two races in light to moderate winds before Friday's race was postponed by light wind.
Prada won the next two races on Saturday and Sunday.
After an off day Monday, AmericaOne rallied to even the series with victories by 34 and 9 seconds.
"I have a lot of confidence in our team now and I think we're really in a good groove," U.S. skipper Paul Cayard said after the postponement was announced.
He said he preferred to sail in at least 8 knots of wind because it "gives us some sort of stability."
The wind speed was about 4 knots at 1:15 p.m. local time, the scheduled starting time.