Rebuilding Red Wings get aggressive; Blackhawks decide to bottom out

The NHL offseason had its share of big moments with three 100-point scorers – Johnny Gaudreau, Jonathan Huberdeau and Matthew Tkachuk – changing teams, the last two in a trade for each other.

A flat salary cap forced the Stanley Cup champion Colorado Avalanche to make tough choices and plentiful cap space allowed the second-year Seattle Kraken to make some key acquisitions.

The coaching carousel was busy, too, with several surprise firings and a number of familiar faces filling the openings.

With training camps opening later this month, USA TODAY Sports grades all 32 NHL teams on what they have done so far during the offseason.

NHL OFFSEASON TRACKER: News, analysis on signings, trades and more

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Anaheim Ducks: B

Ryan Strome and Frank Vatrano will aid a team that lost Ryan Getzlaf to retirement. John Klingberg and Dmitry Kulikov will help a defense that saw Hampus Lindholm and Josh Manson get dealt last season. Or, GM Pat Verbeek can trade the blue liners at the deadline.

Arizona Coyotes: D

They had a quiet offseason other than re-signing Lawson Crouse and trading for defenseman Patrik Nemeth. But they can’t really do much because they’re moving into a 5,000-seat arena.

Boston Bruins: B

The Bruins averted big problems when captain Patrice Bergeron returned and improved when David Krejci came back from a year in Europe. The Bruce Cassidy firing was puzzling, and new coach Jim Montgomery will have to deal with prolonged absences of Brad Marchand and Charlie McAvoy.

Buffalo Sabres: B

Their biggest move was signing Tage Thompson to a seven-year, $50 million extension after his 38-goal season. His top season before that was eight goals. Eric Comrie will move into the goaltending rotation.

Calgary Flames: A

The Flames were facing disaster when Gaudreau left for nothing and Tkachuk had to be traded. But Calgary turned…