The Boston Bruins announced a series of transactions Tuesday, placing defenseman Charlie McAvoy and forward Mark Kastelic on Injured Reserve (IR), defenseman Hampus Lindholm on Long-Term Injured Reserve (LTIR) and recalling forward Matt Poitras and defender Michael Callahan from the AHL’s Providence Bruins.

BOSTON — Bruins interim coach Joe Sacco had plenty to sort out when he met with the media after morning skate ahead of Tuesday’s game against the Lightning at TD Garden. Two players were called up, two were placed on injured reserve and a third was moved from injured reserve to long-term injured reserve. Sacco explained:

The Boston Bruins will be without Charlie McAvoy due to an undisclosed injury. Joe Sacco has explained the situation but hasn't delved into what caused it.

Boston Bruins forward Mark Kastelic was on the ice again yesterday but isn’t ready to play just yet. Joe Haggerty: Bruins defenseman Hampus Lindholm was skating on his own for the second consecutive day.

Matthew Poitras is back with the Boston Bruins, but not under ideal circumstances. In addition to calling up Poitras and defenseman Michael Callahan from AHL Providence on Tuesday morning, the Bruins placed defenseman Charlie McAvoy and forward Mark Kastelic on injured reserve and moved defenseman Hampus Lindholm to long-term injured reserve.

Boston Bruins defenseman Charlie McAvoy is being shut down for a few games with a nagging injury, interim head coach Joe Sacco said Tuesday, per Boston Sports Journal's Joe Haggerty.The Bruins placed McAvoy on injured reserve amidst a flurry of moves.

The Boston Bruins had good news and bad news this morning at practice at Warrior Ice Arena. Forward Mark Kastelic was back at practice in a non-contact red jersey.

The Bruins' recent wins over the Florida Panthers and Tampa Bay Lightning have come despite allowing 43 and 45 shots, respectively. Goaltender Jeremy Swayman has continued to play his best hockey of the season with a .925 save percentage in his last nine starts.

As they prepare for a matchup with the Ottawa Senators (22-18-4), the Boston Bruins (22-19-5) currently are monitoring four players on the injury report. The game starts at 3:00 PM ET on Saturday,

The Edmonton Oilers signed veteran defenseman John Klingberg for the rest of the season. Follow this tracker for the latest NHL news.

Conor Ryan and Evan Marinofsky discuss the comments made by Bruins team President Cam Neely about the trade deadline.

The Boston Bruins have been without defenseman Hampus Lindholm for about a month with a lower-body injury, but another key blue liner is about to join him on th