Marco Sturm’s first game behind the bench for the Bruins did not go as planned.

The Bruins opened preseason action on Sunday evening with a lackluster showing against the Washington Capitals — coughing up four goals in the opening 20 minutes en route to a 5-2 setback at TD Garden.

Morgan Geekie and Patrick Brown both lit the lamp for Boston, while Michael DiPietro (16-of-21) and Simon Zajicek (6-of-6) split the net.

Geeks gets it going 🚨 pic.twitter.com/CNsIdv8ot7 — Boston Bruins (@NHLBruins) September 21, 2025

Here are four takeaways from Boston’s preseason-opening loss on Sunday:

Growing pains in the D-zone

For all of the excitement that comes with a new season of hockey, Marco Sturm was candid ahead of puck drop of the inevitable learning curves in store for a Bruins team lear

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