The Vegas Golden Knights fired Bruce Cassidy on Sunday and replaced him with John Tortorella, a move they hope sparks the playoff-hopeful team with eight games left in the regular season. Cassidy was hired by Vegas in 2022 and guided the Golden Knights to the Stanley Cup in 2023. But Vegas (32-26-16) has struggled late this season, losing its last three games and six of its last seven overall. It entered Sunday third in the Pacific Division, six points behind the first-place Anaheim Ducks but four ahead of the Los Angeles Kings for the final divisional playoff spot. Now, the Golden Knights will turn to Tortorella in their pursuit of another title in the challenging Western Conference. "We thank Bruce Cassidy for his dedication to our hockey club and community over the past four seasons," general manager Kelly McCrimmon said in a statement. "Under Bruce's leadership, we reached our ultimate goal in 2023 by bringing a Stanley Cup to Vegas.…