Tomas Hertl scored with 1:10 left in regulation and Pavel Zacha in the penalty box to lift Vegas to a 4-3 win over the Bruins.
Vegas had a power-play goal disallowed because of goaltender interference, but still scored on the same power play to win it.
Quinn Hughes will miss his second straight game with an injury.
Cassidy has made the most of his situation following his surprise firing by the Bruins in June 2022, hoisting the Stanley Cup ...