McAvoy is married to Sullivan’s daughter Kiley, who recently gave birth to the couple’s first child. McAvoy plays defense for the Boston Bruins, Sullivan coaches the Pittsburgh Penguins and their careers had not overlapped until now, when they’re on the same team with the United States at the 4 Nations Face-Off.

These fall into the category of friendly fire delivered in the friendly confines of the locker room.

Team USA and Team Canada are duking it out for the right to call themselves the champions of the 4 Nations Face-Off tournament, but the former is playing without a key part of their lineup. Defenseman