The Red Wings (93 points) lead Boston (91) in the race for third place in the Atlantic Division. Philadelphia (91) is tied with the Bruins for the second wild card.
The Flyers have three games remaining, while Detroit and Boston each have two. The Bruins host the Red Wings on Thursday night.
Helm scored in the first period and Athanasiou added a short-handed goal in the second for Detroit, which hasn't missed the post-season since 1990. Quincey's goal was an empty-netter.
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