Despite initially telling the Herald the attack had been unprovoked, Maiden admitted a count of common assault and in March was sentenced to what amounted to a one-year good behaviour bond.
Today, Opai had his punishment dished out after pleading guilty to an identical charge.
Judge Gerard Winter sentenced him to 80 hours of community work and 6 months supervision.
The judge labelled it "alcohol-fuelled violence" after hearing Opai had drunk eight bottles of beer leading up to the fight.
"On this occasion you drunk far too much," he said. "It explains it but it doesn't excuse it."
Defence lawyer Julie Ding stressed the fact her client was not the aggressor but accepted that did not provide a legal defence.
"It's fair to say there was a certain amount of give and take of abuse and rudeness," Judge Winter said.
Opai was ordered to pay $375 for breaking the victim's dental plate and injuring her lip.
He would make payments of $20 a week, the court heard.