The US missed a late conversion.
On the upside, New Zealand canoe slalom representative Mike Dawson has finished 10th in his maiden Olympic final.
The top 10 went through in the kayak section, meaning the 29-year-old improved on his 15th place at the London Games.
He posted a time of 91.47s and collected no penalty points in his semi-final but could not match that in the final, completing the course in 93.07s.
Rio woke to rain, wind and mist, affecting a host of Kiwis involved in overnight action.
A capricious wind saw a second day of the regatta postponed because of unrowable conditions, resulting in a shuffling of the schedule.
Four Kiwi crews will face one-day gaps between their semi-final and final, if they qualify, as the last four days get jammed into three.
There were to be four New Zealand boats to contest sudden-death races but they must now wait for what will be a hefty programme tomorrow.
The semi-finals of the women's pair and lightweight double sculls and the men's and women's eights repechages were impacted.
The adverse weather also affected Linda Villumsen, New Zealand's road cycling time trial world champion.
The 31-year-old finished sixth on the hilly 29.9km course.
"It was pretty rough conditions," Villumsen told NZ Newswire.
"There were gusty winds, and rain, especially on the descents."
The women's Black Sticks eked out a 2-1 victory over Spain to keep their hopes of a quarter-final place alive.
In the individual dressage, Julie Brougham recorded a score of 68.543 in her Grand Prix ride to give herself a chance of progressing tomorrow.
Corey Main and Bradlee Ashby have qualified for the semi-finals in the 200m backstroke and 200m medley respectively.
Jo Aleh and Polly Powrie finished sixth in the opening race of sailing's 470 class.
In progress/ still to come:
Equestrian: Dressage - Julie Brougham, from 1am
Sailing: Men's 470 - Paul Snow-Hansen and Daniel Willcox, Race 1 4.05am, Race 2, 5.30am
Sailing: Finn class - Josh Junior, Race 3 4.05am, Race 4 5.30am
Sailing: Laser - Sam Meech, Race 5 4.05am and Race 6 5.30am
Sailing: Nacra - Gemma Jones and Jason Saunders, Race 1 4.05am, Race 2 5.05am, Race 3 6.05am
Sailing: Women's 470 - Jo Aleh and Polly Powrie, Race 1 4.15am, Race 2, 5.40am
Rugby sevens: Men's quarter-final (if qualified)
Hockey: Pool match, Men's Black Sticks v Brazil, 10.30am
Golf: Men's stroke play, Ryan Fox and Danny Lee, 10.30pm