Coburn (lower body) was placed on injured reserve Thursday, the NHL's official media site reports. The Lightning lost three players to injuries in Tuesday's win over the Canadiens, with Coburn's 4-to-6 week recovery timetable representing the lengthiest absence. With the team in need of extra bodies to fill out its roster for Thursday's game against the Bruins, Coburn was moved to IR to pave the way for the promotion of forward Mike Angelidis.