"He's just matured," Tugolukov said. "He's getting really serious about his game. He wants to study the game, he wants to pay attention to the tactical stuff like the systems and everything. I think he's on the right path.
"He's probably a young player who set his goals and targets high, and he's trying to reach them, so he's emotional. Those emotions are about getting better and becoming one of those players who will play in this league for years."
In 2014, Nichushkin got his first taste of playoff hockey, when he had one goal and one assist in six games against the Anaheim Ducks, who defeated Dallas in six games in the first round. After being on the losing end of that series, he's not only ready to experience more playoff hockey, but winning in the postseason.
"Playoffs are playoffs," Nichushkin said. "You can't make mistakes because they're big games."
No one who has watched Nichushkin play since his rookie season can deny how much his game and poise on the ice continue to evolve.
But Stars captain Jamie Benn, who is good friends with Nichushkin, has also seen him develop in another major way.