A former AFL player and his brother have been given prison sentences for assaulting three women in Northbridge earlier this year.
Former Western Bulldogs player Brennan Stack and Shai Martin had pleaded guilty to the vicious attack on the women in a car park in the early hours of March 20, which was captured on CCTV.
They have each been sentenced to three years and six months in jail, with District Court Judge Charlotte Wallace saying there was a need for general deterrence.
She said the violence did "appear to be an anomaly for both of you".
But there was a "very real intention to cause serious harm," she said, and suspending the sentence would send the wrong message.
Judge Wallace said the victims were fortunate that their injuries were not fatal, and she praised the "prompt and fortunate" intervention of police.
Violence occurred during 90-second frenzy
Stack, 34, and Martin, 26, who've been in custody since March, each pleaded guilty to two charges.
The court was told Stack's girlfriend was involved in a confrontation with four women in a Northbridge car park.
A car door had been opened and hit the side of another vehicle, and the argument quickly became physical.
Stack and Martin started hitting and kicking the victims.
The court heard a blow-by-blow account of who hit who, how victims were assaulted while on the ground and dragged by the hair.
Martin stomped on a victim until she was unconscious.
The court heard the events occurred over a 90-second period before police arrived.
Injuries suffered by the victims included concussion, bruising, and a cut to the hand.
Stack's girlfriend suffered a swollen face, chipped teeth and a fractured eye socket.
Nobody was charged over the assault on Stack's girlfriend, which had spurred on Stack and Martin.
Stack 'appalled' by footage, says lawyer
Stack's lawyer Abigail Rogers told the court that once her client saw the CCTV footage, he was "appalled at what he saw".
She said there had been "a lot drunk that evening" which was a "blur".
Ms Rogers told the court the former Western Bulldogs player had seen "fighting in the dark" and "became involved in the confrontation".
But his "actions were disproportionate in the circumstances", she said, and they had "caused him a lot of shame".
Martin's lawyer Kathryn Heslop said her client's actions had left him feeling "ashamed, disgusted".
Martin had 16 character references and "deep shock" had been expressed within them.
Ms Heslop told the court her client had become "enraged" after he saw his sister-in-law "covered in blood".
While Ms Heslop said it was a "bizarre set of circumstances", Judge Charlotte Wallace responded that it wasn't.
"It's not bizarre, something the court sees all the time, really," Judge Wallace said.
She said when people were intoxicated, "they can't act rationally".
'Alcoholism was your downfall': Judge
The judge noted that Stack and Martin had shown remorse through written apologies to the court and to the victims.
Judge Wallace said there was a low risk of recidivism and they were positive role models in the community.
Stack was described as the "protector and the rock of the family".
Both men were eligible for sentencing discounts because of their early pleas.
But Judge Wallace said the need for general deterrence "looms large".
She told the court the violence had occurred as a result of a "perfect storm" of mental health issues and alcoholism, referring to "self-medicating" through drinking.
This behaviour was "like a disease in our society," she told the court.
"Alcoholism was your downfall," she said to the men in the dock.
"Thank goodness police arrived when they did," Judge Wallace said, as it could have been a far worse outcome if they had not.
Stack and Martin will be eligible for parole after serving half of their sentences.
