Russian boxer Vladimir Nikitin, who defeated Michael Conlan in Tuesday's Olympic quarter-final, will not fight in the semi-final.
Nikitin was scheduled to take on America's Shakur Stevenson in the semi-finals on Thursday.
However, he will now not fight due to injuries sustained in his opening two wins, including his victory over Conlan.
On Tuesday the Belfast boxer said his Olympic dream had "been robbed".
Now, despite not fighting again, Nikitin will take home a bronze medal.
Stevenson will advance to the gold medal bout with either Robeisy Ramirez Carrazana of Cuba or Uzbekistan's Murodjon Akhmadaliev on Saturday evening.
Earlier on Wednesday, the International Boxing Association (Aiba) announced that it had dropped a number of officials after a review of their decisions at the Olympics.
Aiba said that, after 239 bouts in Rio, "less than a handful of the decisions were not at the level expected".
The body has admitted it is in a "transition process", but said results of bouts already contested will stand.
