Since Lindy Ruff was named Buffalo's head coach on July 21, 1997, there have been 170 coaching changes in the NHL.
Ruff is the second-longest tenured coach in the four major professional sports leagues. Only Gregg Popovich, who began coaching the San Antonio Spurs in 1996, has been head coach of his team longer.
Ruff has 571 wins as head coach of the Sabres, second-most by a head coach with a single franchise, trailing only Al Arbour (740).
Ruff has more wins than any other coach with his first NHL team.
Barry Trotz is now the NHL's longest tenured head coach with one team, having been with Nashville since day one in 1998-99.