Brandon Saad broke a tie with a third-period goal, and Bryan Bickell and Marian Hossa also scored for the Blackhawks, who have won six of their last eight games. Corey Crawford made 33 saves.
Melker Karlsson and Joe Thornton scored for the Sharks, who began the day three points behind Los Angeles for the final playoff spot in the Western Conference. Antti Niemi made 24 saves.
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