The Bruins are 0-3-2 in their last five games, including a 1-1 tie with the Lightning at the FleetCenter on Tuesday. Rob Zamuner scored for Boston, which hasn't won since a 3-2 victory at Ottawa on Dec. 13.
"We've tied enough games," Boston defenseman Nick Boynton said. "We need to get wins if we want to get into the playoffs."
Boston, 12 points out of first place in the Northeast Division, has won just once in its last 11 games (1-5-4-1). The Bruins did play with some passion against the Lightning on Tuesday after losing their previous three games by a combined score of 11-3.
"We're making strides, we were emotionally involved all night," Bruins coach Mike Sullivan said.
Boston has lost its last three visits to Tampa Bay since a 4-3 overtime victory on March 24. The Bruins, however, have earned a point in 15 of their last 18 road games (9-3-3-3).
The Lightning dropped a 3-1 decision at Atlanta on Friday, losing for the sixth time in eight games (1-6-1-0).
Brad Lukowich scored the lone goal for Tampa Bay, which is 0-2-1 in its last three games -- managing a goal or fewer in each of those contests despite outshooting the opposition by a combined 26 shots.
"The deciding factor was we had 20 scoring changes and didn't finish," Lightning coach John Tortorella said. "We simply can't score a goal."