Former Clark Eriksson Fury star Ali Fraser top scored for Great Britain under-20s against Norway in the group stages of the FIBA European B Championships.
But his old coach John Bunyan was stunned at the decision to leave him out of two crucial games that were lost and left Team GB out of contention for the top spots.
“Coaching staff failed to identify Ali as a key player and proven scorer in Euro B competition,” Mr Bunyan told Heraldsport.
“This is a shocking performance from the GB team and questions must be asked about team selection.
“I have no doubt if Fraser had started in the games against Portugal and Finland, GB would have qualified and competed for the top four spots,” he added.
Fraser had a team high 23 points and nine rebounds for the Brits against the Norsemen.
The win ended a two game losing streak for the GB team, who had gone down to Portugal and Finland in their opening group matches where the former Falkirk player had minimal input to the game.
A GB spokesman told Heraldsport he refuted the criticism: “Ali Fraser has been getting game-time and his talent has been noted.
“The coach has put in six weeks of training and development with the team and it is selected accordingly and the rotations put in place.
“He has been getting major minutes so I don’t understand the criticism.”
Fraser continued his fine form with a further 12 points in GB’s win over Luxembourg.
In GB’s final group game in Bosnia, Fraser started for the first time and hit 13 points in an 11 point win.