Keegan Lowe scored for Edmonton (30-10-5), while Laurent Broissot made 25 stops in defeat.
Dieno snapped a 1-1 tie with his second of the night at 8:20 of the third period. Elson then made it 3-1 for Red Deer at 14:10 before Dieno completed his hat trick into an empty net with a minute remaining in regulation.
Red Deer finished the night 1-for-2 on the power play, while Edmonton was scoreless on its two chances.
Yeah, it was a pretty special moment for me. Today was my Dad's [55th] birthday. I have a lot of family in town, so it was a special moment for me to score my first one today. A win definitely would have capped it off, but you can't have everything.
— Sabres rookie Jack Eichel after scoring a goal in his National Hockey League debut
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