PORT Adelaide utility Jackson Trengove has spoken for the first time about an altercation where he was punched in the face coming to the aid of a young woman.

The incident occurred outside the Moseley Bar and Kitchen in Glenelg – owned by Power teammates Travis Boak and Robbie Gray, and former Adelaide defender Ben Rutten – at 12.30am on Sunday morning.

Trengove was at the bar with other Power players celebrating the 21st birthday of Port Adelaide academy player Teejay Halkias.

"It's one of those situations you don't want to get yourself in," Trengove told Triple M.

"In my defence, I was thinking I was doing the right thing and I think I was doing the right thing.

"I was down there for a friend's 21st, was with all my family and I had my daughter's christening the next day.

"It was just one of those things that happens, but you don't wish anyone gets into that situation because it's not nice to be in."

Trengove left the area as soon as the incident happened before contacting coach Ken Hinkley and general manager of football Chris Davies later on Sunday.

"I got out of there straight away and put ice on my face because I was a little bit worried about my daughter's christening and having a big shiner for that one," Trengove said.

"First thing in the morning, I gave Kenny and CD a call just to make sure they were aware of the situation.

"It wasn't until Monday that we went (to the Port Adelaide Football Club) and had a chat.

"I spoke to the leadership group that I'm a part of about what actually happened down there."

Trengove admitted he had questioned himself in the past few days after the incident whether he had done the right thing.

"I've got the club's support that was I did was 100 per cent correct," Trengove said.

"If that was my little daughter when she was grown up in the same situation, I would hope someone would've done the same thing as I did.

"You don't want to get a shiner or you don't want to get hit, and I'd think twice about it, but I'd definitely do it again.

"I'm just grateful nothing bad happened."