The Bruins signed forward Shawn Thornton to a two-year contract extension worth $2.2M on Monday. Thornton, who leads the NHL this season with 19 major penalties for fighting, has a career-high 143 penalty minutes with four goals and eight assists this season and 29 goals, 43 assists and 759 penalty minutes in his career. "It's a little weight off the shoulders," he said after Boston's 8-0 win over the Maple Leafs on Monday night.