Forward Brian Boyle's goal 2:48 into overtime gave the Lightning a 5-4 win, but much of the talk among the Lightning has been about Drouin's warrior mentality.
"I was surprised he came back but it just shows you the kind of resolve he has," Killorn said. "He didn't miss much time. You think about how long it takes to go in the room and do all those tests and stuff. He came right back. It wasn't like he came back and he was sitting back and waiting to see what happens. He stepped in and made a huge play."
Drouin, 21, has shown plenty to his teammates and the Lightning organization in what's been a time of redemption for the third pick of the 2013 NHL Draft. The saga of Drouin's trade request, indefinite suspension and eventual reconciliation led to his call-up for the final two games of the regular season after he scored nine goals in 10 games for Syracuse of the American Hockey League.
Injuries and forward Steven Stamkos' surgery to remove a blood clot on April 4 allowed Drouin to receive top-six minutes in the Stanley Cup Playoffs. He's delivered with eight points in eight games, including a goal and three assists against the Islanders, after he had no points and was a minus-six in six playoff games last season.
"I think that little stint he had in the AHL really did help him," Killorn said. "He was producing down there and he's been doing it at the same rate in the NHL. When you lose a guy like Stamkos it's definitely a scoring void there. For him to come in and help out so much it's been huge for us.
"He always jokes around that he's got his legs because he's gotten enough rest this year. You can see the skill he has. When he comes and plays like he does with that tenacity, it's tough to stop guys like that, guys that are so dynamic with the puck."