Tredrea established himself as the premier centre half-forward in the competition at the start of the millennium, earning consecutive All-Australian selections from 2001-04.
The strong-marking forward captained the Power to their first premiership in 2004 and took out the club's best and fairest award in 2005 before nagging knee injuries threatened to put a premature end to his decorated career.
He had major surgery on his knee in 2006 and after two seasons struggling to regain peak form it appeared his best was behind him.
Tredrea went into the 2009 season thinking it would be his last, but a vintage performance from the veteran prompted a major rethink.
The Power champion turned back the clock, kicking 51 goals and taking out a record-fourth best and fairest award.
Now, on the eve of his 250th AFL game, the 31-year-old says he still has plenty to offer.
"You never want to put a timeline on things, but mentally I prepared as though last year would be the end. I wanted to make every post a winner and do everything I could to give myself the best opportunity (to perform) and it went on a year longer than I thought it would," Tredrea said on Wednesday.
"To say this season will be my last ... I'm mentally prepared it could be, but that decision will be made come August or September after the finals series and consultation with the coaches.
"If the body's fresh, my form is good and I'm enjoying it then there's no reason why I won't continue."
Tredrea will become the first Port Adelaide player to play 250 games for the club when he takes to the field against West Coast at Subiaco on Saturday night.
Coach Mark Williams said it was only fitting the former skipper should reach the milestone first.
"There's no doubt that Warren's been a leader as far as all the awards at our club go. He's won everything. He's been first at this, had the most of that and kicked more goals in a game than anyone else and it'll be a great player that can surpass some of the things that he's done," Williams said.
"Getting to 250 games is a wonderful feat, especially considering that he's missed so many games because of his knees. You think back to when he was having pieces of bone chipped off his knee just trying to play. I think he's dislocated his kneecap seven times or something. He really is just amazing."
The Power have got the points in each of Tredrea's milestone games so far, but face an uphill battle to maintain the perfect record against the Eagles this week.
Port Adelaide belted West Coast by 78 points at Subiaco in round two of the NAB Cup, but Tredrea said the result counted for little heading into round two of the home and away season.
"We had a good win against West Coast in the pre-season comp, but it was exactly that - a pre-season game. West Coast had some players rested at that stage and we did too."
He said West Coast's form against the Brisbane Lions proved "that their good footy is good enough".
Forwards Daniel Motlop (hamstring) and Robbie Gray (back/hamstring) have been ruled out of the clash, but ruckman Dean Brogan has been cleared to play after copping a heavy knock in the win over North Melbourne on Sunday.
