The Blues traded for Mailloux from the Canadiens on Tuesday in exchange for Zachary Bolduc.

EDGE Analysis

Mailloux has one year remaining on his contract before he becomes a restricted free agent in 2026-27. The right-shot blueliner provided two goals and four points in just seven regular-season games with Montreal in 2024-25, and he'll look to earn a full-time role in the bottom four with St. Louis this coming season.

Mailloux was reassigned to AHL Laval on Sunday.

EDGE Analysis

Mailloux was a healthy scratch in Sunday's 5-3 loss to the Lightning. He has two goals, two assists, 10 shots on net, eight blocked shots and nine hits in seven NHL outings this season. He might return after the 4 Nations Face-Off break to be a depth option for the Canadiens.

Mailloux scored a goal and added three hits in Wednesday's 6-3 loss to the Kings.

EDGE Analysis

Mailloux has racked up two goals and two assists over six outings at the NHL level this season. This was his first appearance with the big club since Oct. 29. Mailloux will compete for playing time with Jayden Struble while Kaiden Guhle (quadriceps) is on the mend. Mailloux has added nine hits, seven blocked shots and a minus-3 rating. He's in a third-pairing role, but if he keeps putting up points, he may be worth considering in DFS or as a streaming option in season-long formats.

Mailloux was called up from AHL Laval on Tuesday.

EDGE Analysis

Mailloux represented Laval at the AHL All-Star Classic on Monday, and now he'll rejoin the Canadiens, at least for the rest of their road trip. It's unclear if he'll play Tuesday versus the Sharks.

Mailloux was loaned to AHL Laval on Sunday.

EDGE Analysis

Montreal announced that Mailloux will represent the Rocket at the AHL All-Star Classic in Palm Desert, California on Monday. The Canadiens visit the Sharks on Tuesday, so Mailloux will presumably link back up with the team then. The 21-year-old has provided a goal and two assists across five appearances with the big club in 2024-25.

Mailloux was recalled from AHL Laval on Saturday.

EDGE Analysis

Mailloux will be an option for Montreal's three-game road trip, which begins against Anaheim on Sunday. He has one goal, two assists, seven shots on net, seven blocked shots and six hits across five NHL outings this season.

Mailloux was demoted to AHL Laval on Wednesday.

EDGE Analysis

Mailloux has been solidly productive to open the season for the Habs, registering three points, seven shots and seven blocks in five contests, so it's somewhat surprising to see the youngster heading back down. However, both Kaiden Guhle (upper body) and Justin Barron (upper body) are traveling with the team ahead of Thursday's tilt versus Washington, indicating one or both could be ready to return. For his part, if Mailloux continues to produce offensively in the minors, he could force Montreal to add him back to the NHL roster.

Mailloux had an assist, two shots, two blocks, three hits and four PIM in Tuesday's 8-2 loss to Seattle.

EDGE Analysis

Mailloux's shot was saved by Joey Daccord, but Cole Caufield was there to bang in the rebound to make it a 4-1 game late in the first period. The assist gave Mailloux points in two straight, but the rookie was also on the ice for three of Seattle's even-strength tallies and has a minus-4 rating through five games played.

Mailloux logged an assist in Sunday's 4-3 win over the Flyers.

EDGE Analysis

Mailloux again saw low ice time, skating for just 13:31 of Sunday's win despite being listed on the top pairing. The 21-year-old has two points through four appearances, but he also has a minus-2 rating, two PIM, three hits, five blocked shots and five shots on net. With Kaiden Guhle (upper body) landing on injured reserve Sunday, Mailloux may have a bit more time to make an impression, but it's likely he'll head back to AHL Laval at some point.

Mailloux blocked two shots over a season-low 11:27 of ice time in Saturday's 5-2 win over the Blues.

EDGE Analysis

Mailloux opened the game partnered with No. 1 defenseman Mike Matheson but was on the ice for just 13 total shifts and saw his TOI reduced by eight minutes compared to his previous outing, a 7-2 loss to the Rangers on Tuesday. The young blueliner's ice time took a hit in the second period after he failed to cover St. Louis' Jake Neighbours, who tied the game at 2-2. This comes after a rough night against New York on Tuesday, when he finished with a minus-3 that included letting up on a puck that he perceived was icing but turned into a Rangers goal. Montreal is dealing with a pair of injuries on the blue line, so Mailloux is being given the opportunity to learn from his mistakes, but that should only last until either Justin Barron (upper body) or Kaiden Guhle (upper body) are ready to play.