James Downey says he is delighted and "pleasantly surprised" to become the latest member of the current Saints squad to reach 100 appearances.
Downey has been a virtual ever-present since his debut against London Welsh in September 2007.
And it is against another Exiles club that he will make his hundredth appearance when he runs out for tomorrow night's Aviva Premiership Rugby clash with London Irish.
In an exclusive feature interview for the official matchday programme, Downey admitted that the milestone has crept up on him.
"You don't think like that," he says. "Actually I didn't even know until I was called for this interview! I knew I was close but I wasn't too sure. I certainly wasn't thinking I'd get to this point when I arrived because I'd only signed a one-year deal. But I've got here and I'm loving being at the club.
"It's a pleasant surprise. I needed stability. I'd been around a few clubs before I arrived, sometimes through no fault of my own, and I'm glad I've found somewhere and I'm loving playing here."
In the interview Downey talks about what the Saints has given him over the last three-and-a-bit seasons, the changes he has seen at the club and why he believes that there is more to come from the squad in the future.
The matchday programme will be on sale around the ground, priced at just £3, and this week also includes an away venue guide to Leeds, David Powell's view on artificial pitches and pull-out posters and collectable player cards for you to keep.