After Jordan Oesterle had the puck ricochet off his stick into the air at the offensive blue line, Kapanen swatted it forward and outraced Oesterle to the loose puck before shooting over Adin Hill's glove.
"I think everybody here knows that's my go-to move when I get a breakaway so I just decided to try it and hopefully it would go in, and it did," Kapanen said. "We need these points, we need these extra points. At this point in the season with the standings, these are big points for us."
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The Coyotes appeared to have won 1:30 into overtime when Jakob Chychrun took a pass from Taylor Hall at the top of the slot and shot between Jack Campbell's pads, but the goal was overturned for goalie interference on Derek Stepan.
"It's definitely a little bit different. You think you win the game and then it's game-on again, so it's a little bit different," Coyotes forward Christian Dvorak said. "It was unfortunate."
Zach Hyman scored twice, Alex Kerfoot had two assists, and Campbell made 35 saves for the Maple Leafs (30-19-8), who are 2-0-1 in their past three games.
"We did feel pretty confident. Jack felt very confident," Maple Leafs coach Sheldon Keefe said about the goalie interference review. "When you look at it, it was as straightforward as you're going to get for these types of calls."