The first two periods of the Blackhawks' season finale Wednesday mirrored their last few weeks: Sloppy, slow and worrying.

Then a lucky goal off Sam Rinzel's stick late in the second period shifted momentum, and it seemed the Hawks suddenly discovered an extra reserve energy tank, racing away for a 5-2 win over the Sharks.

They dominated the third period, getting two beautiful goals from Louis Crevier, two assists from Connor Bedard (both saucy backhand passes) and a redemption goal by Ryan Greene, who had missed an empty net earlier.

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"We wanted to finish on a good note, even though the last couple weeks have been hard," Crevier said. "It doesn't erase what happened, but we showed some character in the third."