How the Blackhawks plan to improve their defense without changing their systems

After a team-wide reckoning Saturday night through Monday morning, the Blackhawks elected not to overhaul their systems — or even make any major tweaks — but to instead bear down on numerous points of emphasis within those systems.

At practice Monday, they spent the first half working on defensive-zone coverage. Then they stopped for a rare mid-practice meeting before returning to the ice to work on tracking in transition.

Considering how inept the Hawks have looked at times this season — including throughout their 9-2 drubbing Saturday that prompted this reality check — fans may be confused why they wouldn't burn everything and start from scratch.

But coach Jeff Blashill, whose job security…