The Calgary Flames could have clinched a spot last night. Their magic number right now is a 1. Which means that any win by them, that number goes down by 1. Any loss by the Los Angeles Kings, that number goes down by 1. Any OT/SO loss by any of them goes down by 0.5. Once that number reaches 0, the Flames officially clinch a spot.
Last night, they played the Los Angeles Kings. Which means that a win in any fashion (regulation, OT, or shootout), would have clinched a spot for them in the 2017 Stanley Cup playoffs.