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.
A timetable for McAvoy's return is unclear, but it will probably be a long-term absence. Interim head coach Joe Sacco expects the defenseman to be unavailable in the "short term," according to Eric Russo of the Bruins' official site, but didn't go into more detail. McAvoy has seven goals, 23 points, 46 PIM, 89 hits and 81 blocks over 50 appearances with Boston in 2024-25. Jordan Oesterle will probably play against Anaheim on Saturday due to McAvoy's absence.