Hayden Reece Cashen, pleaded guilty to one count of common assault in Dubbo Local Court on Wednesday.

The 22-year-old had been drinking at the Amaroo Hotel with friends on July 17 last year when the incident occurred, court documents revealed.

It was about 1.30am when Cashen engaged in a game of pool in the outdoor beer garden, with a female.

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It was during the game he said "I'm not scared of anyone, no one can scare me", according to police.

The female victim had approached Cashen and stood 30 centimetres away, when without warning he took hold of her shoulders and turned her around.

Cashen placed his forearm under her chin, in what police said was a choke hold-type fashion and squeezed his grip cutting off the blood circulation to the victim's head.

After about 10 seconds the victim lost consciousness, when Cashen placed her on the ground and continued his game of pool.

The victim regained consciousness 30 seconds later and sat up in a nearby seat. She had noticed her right ankle began to swell.

Cashen approached her and asked "why didn't you tap out?".

The victim's friend helped her walk away to the bathroom, when she noticed a red mark on her neck.

The next morning the victim noticed the swelling around her ankle had worsened, and she went to the police station to report the matter.

According to police, Cahsen participated in an interview where he told officers he would have let go if she had "tapped out".

On Wednesday when Magistrate Gary Wilson asked if he "choked her out", Cahsen told the court it was "by accident" and he was "mucking around".

"It's a pretty stupid game," Magistrate Wilson said.

"You said 'why didn't you tap out?', well it would've been a bit late for that."

Cashen, who was representing himself at court, said he had "cut back on drinking" and his boss wanted to put him into an alcohol rehabilitation program as he had got to the stage he was drinking every day.

"I'm trying to turn my life around," Cashen told the court.

"I understand the consequences."

Magistrate Wilson said given the serious nature of the offence, and the fact he had been on a good behaviour bond he had no option than to impose a conviction.

Cashen was convicted and sentenced to a conditional release order to be of good behaviour for nine months.

"If you reoffend, you're in serious trouble," Magistrate Wilson said.