When Chris Kunitz sent a knuckler to the back of the net that took the Penguins to the 2017 Stanley Cup Final, he became Ottawa's biggest villain. Kyle Ivan, a Senators superfan, took that unwanted crown nearly a decade later in a roundabout way. In the melodrama that is the Stanley Cup playoffs, Kunitz's goal was as crushing as any. Although it was the Eastern Conference finals, the winner felt bound to go on and beat the Predators to win the Cup. Sure enough, the Penguins did take care of the Predators in six games to claim back-to-back titles. Hockey fans live and die with each shot of the Stanley Cup playoffs, and for a franchise like the Senators that has yet to hoist the Cup, coming just short of the mountaintop hurts. Especially because it could be your team's last shot for a while, which was the case for Ottawa. After Kunitz's double overtime goal, the Senators didn't return to the playoffs for seven long seasons.…