The Pittsburgh Penguins have parted ways with head coach Mike Sullivan in a mutual decision to seek new opportunities and a fresh identity for the team. Sullivan, who had a decade-long tenure marked by back-to-back championships, leaves after the team missed the playoffs for the third consecutive season, finishing with a 34-36-12 record. The Penguins will begin an immediate search for a new head coach, joining several other NHL teams with coaching vacancies.