Matt Grzelcyk is one of three Bruins who will be sidelined to start the 2022-23 NHL season. The Boston defenseman underwent shoulder surgery in June that will keep him out of action for five months, leaving the Bruins thin at the blue line with Charlie McAvoy also out due to shoulder surgery. Grzelcyk appeared on the WEEI-NESN Jimmy Fund Radio-Telethon on Tuesday afternoon and provided an update on how his rehab is going,
