Tampa Bay, which trails Boston by a point for the second Eastern Conference wild card, got two goals from . and also scored, and , who got pulled 14 minutes into the first after allowing three goals on eight shots, returned to start the second and finished with 25 saves.
"It's not going to mean anything unless we get ourselves in (the playoffs)," Tampa Bay coach Jon Cooper said. "This was just another step, a really exciting one."
Artemi Panarin, Patrick Kane, Tomas Jurco and Richard Panik scored for the Western Conference-leading Blackhawks, who were coming off a 7-0 loss Saturday night at Florida.