Francois Etoundi assaulted Gareth Evans, also a weightlifter, in the Athletes' Village on Wednesday morning, Glasgow Sheriff Court heard.
The assault followed an earlier verbal exchange between the pair relating to Mr Evans' athlete girlfriend.
Sheriff Andrew Cubie said Etoundi, 29, had brought "the law of the playground" into the Athletes' Village, while his behaviour "undermines the concept of the friendly games".
Defence lawyer David Hunter said Etoundi, who is originally from Cameroon, was "bitterly bitterly disappointed".
The court heard that the assault had taken place at 5.30am, after Mr Evans left the athletes' dining room.