Christopher and Matthew Grimley will fight for the Czech Junior title after easing through to the final in Orlová-Lutyně.
The brothers defeated German duo Brian Holtschke and Malte Wagner in the semi-final, prevailing 21-11 21-8 to set up a clash with England’s Zach Russ and Steven Stallwood, on Sunday.
The Grimleys reached the final in superb style, first eliminating Slovakian pair Alex Chudic and Alexander Velic 21-10 21-5 to progress to the last eight.
From there, they toppled the Ukraine’s Glib Beketov and Ivan Medynskiy in straight games to book their berth in the semi-finals.
It will be an all-British final on Sunday as the first and second seeds go head-to-head, with England’s Russ and Stallwood the Grimleys’ opponents having made serene progress so far.
Earlier in the day, Christopher progressed to the semi-finals of the men’s singles with dominant displays on court.
Having defeated Austria’s Kilian Meusburger 21-17 21-14 in the second round, his next opponent, Peter Hrncar of Slovakia, retired in the second game to see the Scot through to the quarter-finals.
There he met the Netherlands’ Dennis Koppen, and although he lost the opening game, Christopher bounced back to triumph 19-21 21-13 21-11 and book his spot in the last four, where he will face Moldova’s Cristian Savin..
Matthew couldn’t follow in his brother’s footsteps however, exiting in the quarter-finals.
He had comfortably defeated Holtschke in the second round, prevailing 21-7 21-10, before toppling Andrej Antoska of Slovakia in three games.
Facing second seed Julien Carraggi in the last eight, Matthew got off to the best possible start, winning the first game 21-14.
But the Belgian proved too strong, winning the next two games to progress and eliminate his Scottish opponent from the tournament.