McAvoy (shoulder) was placed on injured reserve Saturday, per the NHL media site.

McAvoy suffered a right shoulder injury during Team USA's clash against Finland on Thursday. He returned to Boston but began to experience increasing pain, which led to him being diagnosed with an infection as well as a significant AC joint injury. He had a procedure Tuesday and is in the hospital to be treated with IV antibiotics, the Bruins announced Wednesday.

McAvoy (upper body) will not be in the lineup for Team USA's clash with Canada on Thursday.

McAvoy (upper body) is still undergoing additional tests, raising doubts regarding his availability against Canada on Thursday, Pierre LeBrun of TSN reports.

McAvoy scored a goal on four shots in Tuesday's 3-0 win over the Wild.

McAvoy scored a power-play goal on two shots in Saturday's 6-3 win over the Rangers.

McAvoy (upper body) will be back in the lineup versus Winnipeg on Thursday, Joe Haggerty of Boston Sports Journal reports.

McAvoy (upper body) won't be available for Tuesday's game in Buffalo, Joe Haggerty of Boston Sports Journal reports.

McAvoy (undisclosed) doesn't have a timeline for his return to the lineup, Andrew Fantucchio of Boston Hockey Now reports Sunday.

McAvoy (undisclosed) was placed on injured reserve Tuesday.