With the Oilers a man down 57 seconds into the final period, Boyd Gordon found Hendricks with a pass, and the Edmonton center put a wrist shot past Jhonas Enroth for the key score.
Justin Schultz and Jeff Petry also scored as the Oilers picked up a fourth win in five games.
Ilya Bryzgalov earned the decision with 42 saves.
Enroth finished with 25 stops.
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UPI Sports Results for September 19, 2014