The misfortune known as Dennis Seidenberg’s injured right knee has also been considered an opportunity.
The window that opened Dec. 28, the first of 44 regular-season dates without their second-best defenseman, has allowed the Bruins to take a wide-angle look at their defense in context of another playoff run.
The evaluation: Not bad. But not good enough.
The Bruins are 5-5-1 without Seidenberg, allowing 2.82 goals per game. This season, they’ve given up 2.16 goals per game, second-fewest behind Los Angeles (2.04).
The Bruins improved in their last three games, in which they totaled five points against Dallas, Chicago, and Los Angeles. They allowed two goals in each game. Full story for BostonGlobe.com subscribers.