As the puck rolled around the boards, Reaves and Hathaway make contact in front of the Bruins' bench. After the check, the two exchange a heated set of chirps. Reaves clearly challenges Hathaway to a fight, but is quickly held back by two referees while a clearly skittish Hathaway crawls onto the bench.
Even Hathaway, a notorious spark plug and one of the more willingly physical players in the league, was clearly scared to engage with Reaves.