Coleraine duo Alan Campbell and Richard Chambers are through to the finals at the World Cup regatta in Lucerne.
Campbell finished third in his single sculls semi-final with Chambers second in the lightweight double sculls.
Sunday's final will also include Richard's brother Peter with the GB lightweight four, who qualified directly from their heat on Friday.
Meanwhile, Coleraine's Joel Cassells won gold in the non-Olympic class lightweight pair final on Saturday.
Cassells and Scrimgeour, the current World and European champions, led the lightweight pair final from start to finish but were involved in a tightly contested race involving five of the six boats.
The GB pair were never headed and held off all challengers with the French duo Augustin Mouterde and Alexis Guerinot pushing them all the way to the line with the gap only a second and a half.
Cassells and Scrimgeour have done all they can to make the GB selectors change their mind on the make-up of the lightweight four for Rio but a strong performance from the quartet on Sunday will likely mean they will miss out on Olympic selection when the squad is announced on 9 June.
Campbell squeezes through
Campbell will be pleased to have made an 'A' final for the first time since the same regatta in Lucerne almost a year ago.
The London 2012 bronze medallist missed out in the World Championships last September and more recently the European Championships three weeks ago.
He battled for the lead with Synek through the halfway mark of Saturday's semi-final before being overtaken by Cuban sculler Angel Fournier Rodriguez.
In the closing stages Campbell had to hold off the fast finishing Stanislau Shcharbachenia from Belarus, which he did by only .26 of a second.
Chambers and Fletcher, making their season's debut this weekend, took the race to the rest of the field and led with 500m remaining, only to be caught by Norway's Kristoffer Brun and Are Strandli.
Irish brothers Gary and Paul O'Donovan took the third qualifying spot.