An MRI of Stolarz' knee revealed a "loose body" in his knee.

Anthony Stolarz was not on the ice at Toronto Maple Leafs practice and once it was was learned that GM Brad Treliving would provide an update on the goaltender, there was a sense that something was up.

Initially "day-to-day" with a knee issue that forced him out of the first period of the club's win against the Anaheim Ducks last week, Treliving said Stolarz would be out approximately 4-6 weeks due to a knee procedure that he will have on Wednesday.

"We did an MRI on him the following day. The good news was everything came back. and there was no structural damage. There seemed to be still some discomfort with him and some issues moving his knee, straightening his leg. And there was found like a little, almost like a little pebble, like a little loose body that was stuck in behind his knee," Treliving said. "So he's going to have a procedure to have that removed. It's not a repair. It's not anything of that nature, but hey're going to remove like a little loose body, I guess. It looks like a little pebble. And at this time, we're going to list him as week to week. Hopefully, we will have a little bit better update.

"I would anticipate that we're looking in the four-to-six week window. You know, hopefully sooner rather than later. So obviously not, you know, you don't want to see anybody out, especially goaltenders who have been playing well like that. But it has to be addressed and we're going to get it addressed."

Stolarz has had knee issues in the past, and Treliving stressed it wasn't a recurring issue.

"It's not uncommon for players to have, whether it be little loose chips or, you know, basically the medical doctor, the medical group calls it loose bodies. And it's just, it's in the wrong spot," Treliving said. "And we waited for a few days to see if it would move. But it doesn't allow him to get full range of motion of his leg right now. So it's got to be removed.

Stolarz has been a key player for the  Maple Leafs in the 2024-25 season. With a record of 9-5-2, a .927 save percentage, and a 2.15 goals-against average, he has proven to be a reliable presence in the net. Stolarz's performance has been particularly impressive given the Leafs' challenges with injuries and inconsistent play.

The 30-yeart-old  signed a two-year, $5 million contract  with Toronto as a free agent on July 1, 2024, after winning the Stanley Cup as a backup with the Florida Panthers in June.