NEWARK, NJ - DECEMBER 31: Jeremy Lauzon #79 of the Boston Bruins waits for a face off during an NHL hockey game against the New Jersey Devils on December 31, 2019 at the Prudential Center in Newark, New Jersey. Devils won 3-2 in a shootout. (Photo by Paul Bereswill/Getty Images)

When the Boston Bruins lost Torey Krug and Zdeno Chara on defense to free agency in the offseason, it was apparent that the Bruins were going younger on defense for the 2021 season.
The Bruins knew what they had in Charlie McAvoy, Brandon Carlo, and Matt Grzelcyk, but after that, there were a lot of questions.