NHL notebook: Sullivan gets four-year extension with Penguins

Pittsburgh Penguins coach Mike Sullivan agreed to a contract extension. Sullivan’s expansion begins after the 2019-20 campaign. Since getting Penguins coach in December 2015, he has won two Stanley Cup titles. “Mike has done a fantastic job bringing four 100-plus-point seasons together with our staff,” Pittsburgh general manager Jim Rutherford said in a statement. “To…