If Sydney Swans fans hear one of their heroes yelling encouragement to Michael O'Loughlin as he runs out for game No. 250 on Sunday, don't be surprised if it's the man himself.

At least that's what long-time Swan Ben Mathews says teammates have come to expect from the man known as 'Magic'.

"C'mon Magic, I want a big one from you today" or perhaps even "You're the man, Magic. The greatest!"

Mathews, who has played 12 seasons with his good mate, said while it would be all business come bounce down against the Brisbane Lions at the SCG on Sunday, O'Loughlin was one of the team's funny men.

"He's a very funny guy, actually," Mathews said.

"He loves talking in the third person. I think he thinks he's Muhammad Ali and Anthony Mundine all rolled into one, to be honest with you. I suppose when your performance backs it up, which his does most weeks, then you can do that - talk in the third person and pump yourself up.

"But he's a very funny guy, always providing a light-hearted moment for the boys. He's very enjoyable to be around but, at the same time, he works unbelievably hard on his body to get it right and at his skills and his game, so there's no secret as to why he's so good. It's just because of all the hard work he puts in."

Young Swan Heath Grundy is mentored by O'Loughlin, and says the time the pair spend together is invaluable for the blossoming forward.

"If I have a bad game or whatever, he'll let me know what I need to work on and those sorts of things," Grundy said.

"I'll try to watch him if I'm not playing in the seniors, and watch how he works … sometimes he's got a bit too much magic but I definitely try to do what he does."

Perhaps the man who knows O'Loughlin's true worth to the side is someone who has not only played with him, but now gets to sit back and admire his handiwork each week.

Coach Paul Roos also said O'Loughlin's ability to remain an elite player, given his battle with knee injuries, adds to his milestone achievement.

"I think what makes Mick sort of special is what he's been able to go through with his knees," he said.

"[To] play in two Grand Finals, and win one, with the limited training he's been able to do over the last four years, and the contribution he's made, has been unbelievable. He's hardly trained, so it just shows you the level of talent [he's got]."

Roos said O'Loughlin's greatest asset was his ability to turn a seemingly innocuous situation for a defender into party time for Swans fans.

"I think his ability to make something out of nothing, that's the thing that probably sets Mick apart," Roos said.

"He can do things that other players simply can't … even on the weekend (against Richmond) on the half-forward flank there were two guys closing him down. He dodged one, dodged the other and ran in and unfortunately missed the goal from 12m out.

"He'd done all the hard work and, you know, … no one else would have been able to get in a scoring position other than Mick. He just has an unbelievable ability to make things happen."