A friend of the man accused of the one-punch attack on Luke Adams has told a Perth jury she urged the alleged victim to walk away for his own sake moments before he was struck and his head hit the ground.
Kara Hagen, 19, testified today at Dylan Gerald Wayne Winter's District Court trial about how her first-ever outing in Northbridge ended with Mr Adams receiving life-threatening head injuries when he was felled by a single punch from Mr Winter.
Mr Winter has pleaded not guilty to unlawfully causing grievous bodily injury to the former WAFL footballer when the strangers crossed paths on Lake Street early on May 1 last year.
The accused man admits punching Mr Adams once, but claims it was in self-defence.
Miss Hagen, the girlfriend of Mr Winter's best friend Jake Ward, said a big group of friends were staying at a city hotel overnight and had gone into Northbridge.
She said the group was at The Library nightclub when a couple of friends who were play fighting were thrown out. Miss Hagen said when she exited the club she saw Mr Winter being thrown up against a car by a bouncer and punched in the head.
The court was told some members of the group were eventually issued with move-on notices by police.
Miss Hagen, who had only had a few drinks that night, said she and Mr Ward were fighting with each other after a man hit on her as they walked along Lake St.
She said then a tall man across the road yelled out something at her in a "seedy way", which caused her boyfriend to react angrily.
Miss Hagen said as Mr Ward and the tall man started to walk towards each other she grabbed her boyfriend's arm and repeatedly yelled at him to stop, but he shrugged her off.
She said she also yelled at the tall man, who she now knows to be Mr Adams.
"I yelled at the tall person 'please walk away, for your own sake please walk away'," she said.
"He made eye contact with me, he definitely hesitated, he paused, he definitely heard what I said. He had the chance to walk away and he didn't."
Miss Hagen said Mr Ward and Mr Adams were grappling when another man who was Mr Adams came over and took over fighting her boyfriend.
She said Mr Winter ran over and started fighting with Mr Adams, who said something to the accused.
"I just remember him (Mr Winter) straight away hitting the ground ... flat on his bottom," she said. "Straight away he (Mr Winter) jumped back up and punched the victim."
Miss Hagen said Mr Adams fell "like his legs were swept from under him" and she heard a "really loud crack" as his head hit the ground.
"Everything stopped, everyone stopped, everyone heard the noise," she said.
Miss Hagen said Mr Adams had blood in his hair and on his face and she and her friends walked away and caught a taxi, with the accused disappearing at some stage.
She said she saw Mr Winter back at the hotel and he told her: "I hope he's OK".
The jury has previously heard that Mr Winter sent a text message to Miss Hagen later that day in which he told her the "guy was mouthing off so he got what he deserved" after Miss Hagen texted him saying she blamed herself and could not get the image of the incident out of her head.
Miss Hagen and another female in the group, Edana Day, both said that Mr Winter was not acting aggressively or misbehaving before the incident with Mr Adams.
Miss Day, a 21-year-old nurse, said she heard a "verbal commotion" on Lake St and turned around to see a crowd of people fighting on the road. She said she saw a man she believed was Mr Winter on the ground and the next time she looked the tall man he was fighting with was on the ground.
Miss Day said after initially walking away, she returned to the scene to check for a pulse and started administering first aid on Mr Adams, but left when an ambulance arrived about five minutes later.
She said Mr Winter became involved in the altercation after he was with her at the intersection of Lake St and Roe St and started walking back up Lake St to look for more of their friends.
The trial continues.