The Bruins are reeling on the ice and off it, as Boston began what could be a trade deadline fire sale on Tuesday just before getting hammered by the Predators at home.

Here’s what we know about the engaging Trent Frederic. He likes to hit, likes to fight (ask Corey Perry), likes being in the same Edmonton Oilers’ locker room as Connor McDavid and Leon Draisaitl, and he knows his history.