Since his debut in 1995, O'Loughlin has played 279 premiership, 14 pre-season, two State of Origin and four International Rules matches.
Those include the Sydney Swans' 2005 flag – its first premiership in 72 years – plus runner-up efforts in 1996 and 2006, emphasising O'Loughlin's position as a key figure in the club's recent successes.
However, this milestone was news to the forward until shortly before Wednesday's press conference.
"Yeah, I didn't realise till this morning and it's a great honour," he said. "Spida (Peter) Everitt obviously went through it and I had a chat with him."
When injury threatened O'Loughlin's career four or five years ago, he was unsure how much time he had left at the level.
"I always said I didn't think I'd be here this long," he noted. "And to play so many games at one club … it's something special."
The 31-year-old is has enjoyed a good start to 2008, kicking 24 goals in his nine matches, and credits a solid pre-season for his form.
"It's amazing what a pre-season can do for a bloke's confidence and I've been lucky enough to have that this year," he said. "I'm not pulling up as sore and the knee's holding up well – touch wood."
Sydney Swans coach Paul Roos paid tribute to the longevity of the premiership forward while acknowledging the respect O'Loughlin had earned on and off the field.
"We'd expect him to play on next year," he said. "And he'll probably knock on my door when his career is over looking for a job, just like I did when I finished playing.
"And I've been milking the system ever since," Roos added with a smile.
The Swans meet Richmond at the SCG on Sunday with high morale after a stirring victory over Port Adelaide last weekend.
For O'Loughlin, it highlighted that the Swans can still tough it out and have talent rising through the ranks.
"It was a gritty win," O'Loughlin said.
"Jarred Moore's worked on his fitness and his tackling. His help to Ryan O'Keefe to play that small forward's role was outstanding."
