The Los Angeles Kings have signed defenseman Jack Johnson to a seven-year contract extension that will carry into the 2017-18 season, Kings President/General Manager Dean Lombardi announced Saturday night. The seven-year contract matches the second longest in club history. Kings center Anze Kopitar also signed a seven-year contract extension on Oct. 11, 2008, and former Kings Great/Hall of Famer Wayne Gretzky signed an eight-year contract in 1988 (after the first year that contract was extended from seven years to nine years).