The prospects of it being gold looked promising after they finished second in the first race of the day and established an eight-point lead over the British crew but they had a horror final race when they crossed 18th in the 20-strong fleet to let their rivals back in. The final race will essentially be a match race between the two leading boats.
"We had a pretty good first race today, which helped us a little bit, but then we followed it up with our little stuff-up of the regatta,'' Aleh said. "There had to be one, we figured, so that was it.''
The New Zealand women's hockey side will be feeling even more deflated after they were beaten by the Netherlands in a penalty shootout this morning.
Twice the Black Sticks held the lead against the No 1-ranked side in the world and a team they have never beaten at a major tournament. Twice they refused to buckle when the Dutch equalised but eventually went down 3-1 in a shootout after the scores were level at 2-2 after extra time. They now need to pick themselves up for Saturday morning's bronze medal match against either Argentina or Great Britain.
Men's K2 1000m kayakers Steven Ferguson and Darryl Fitzgerald finished seventh in their Olympic final on Dorney Lake last night (NZT) as they struggled to match the explosive pace of the best combinations in the world.
Ferguson didn't rule out another Olympic campaign, which would continue an amazing association with the Games by one of New Zealand's most famous families.
"I'm only 32 so I've got plenty of time left,'' he said. "I'm definitely open to it. I haven't shut that door, I'll just have to go home to re-evaluate.
"The Olympics define who I am. There have only been 30 Games and Fergusons have been at nine of them [father Ian five, Steven four]. However, I've also got a nine-month-old little boy to consider these days.''
BMX rider Sarah Walker was the second fastest in the seeding rides today and will get the crucial inside gate for Friday night's semifinal.
Australia's Caroline Buchanan was the fastest, with Great Britain's Shanaze Reade, who is among the favourites for the event, setting the fifth fastest time.
Marc Willers was 10th fastest in the men's seeding run and Kurt Pickard 16th.
Brent Newdick was 15th after two events of the decathlon with gold medal favourite Ashton Eaton well ahead of the chasing pack.