Coleraine rower Alan Campbell has progressed to Sunday's final of the single sculls event at the World Cup regatta in Belgrade.
Campbell finished third in Saturday's semi-final behind Lithuanian Mindaugas Griskonis and runner-up Ondrez Synec of the Czech Republic.
Coleraine brothers Richard and Peter Chambers won their lightweight four heat as the British boat pipped China.
The Chambers duo qualified directly for Sunday's decider.
All three of the Northern Ireland rowers are set to be part of the Great Britain team for the Olympic Games.
Single sculler Campbell earned a comfortable win in his heat on Friday as he came in over six seconds ahead of Germany's Karsten Brodowski.
The Chinese led at halfway but the British won by over a second.
Campbell won world championship bronze in 2011 and is regarded as a strong medal contender for the London Games.
Peter Chambers is racing in the lightweight four event alongside his brother Richard in Serbia after being promoted to the British boat.
The same British four have also been picked for the two World Cup regattas after Belgrade.
Peter Chambers has broken into the Olympic-class boat after winning world titles at Under-23 and senior level in the non-Olympic class lightweight men's pair last year with Newcastle's Kieren Emery.
Greg and Jonny Searle were the last brothers to win an Olympic medal in the same boat, winning gold in 1992, and Greg is now back in the eights squad chasing a second gold 20 years later.