Dan Marr, Director of NHL Central Scouting, said he has been impressed by Sergachev's smarts, poise and instincts.
"His read-and-react game is fast," Marr said. "He's able to transition quickly. He's got that focus on the ice, and he's a guy you don't catch out of position. It is a lot tougher to beat him 1-on-1 now than it was earlier in the year."
Sergachev said his midterm ranking, where he's No. 4 among North American defensemen, pushes him to raise his game more.
"It gives me motivation to do even better because I'm the fourth defenseman and I didn't like that," Sergachev said. "Everyone wants to be first, and I want to be first. But it's great being in the top 10. I like it, but I want to be better."
Windsor defenseman Logan Stanley has been paired with Sergachev most of the season. They also were defense partners for Team Bobby Orr at the 2016 CHL/NHL Top Prospects Game in Vancouver on Jan. 28.
"He has an English teacher now and it gets better and better, so it's fun to play with him," said Stanley, No. 23 on Central Scouting's midterm ranking. "I think he makes me look a lot better. He still yells in Russian when he gets fired up. He sometimes comes back to the bench and says stuff in Russian, but we laugh at him and brush it off."
Sergachev is serious about making a mark. He picked No. 31 in Windsor because no one else liked it. He's determined make the number relevant while creating his own identity as a player.
Before he began starring on defense, Sergachev was a pretty electrifying forward.
"In my minor-midget year in Russia, I played forward for 20 games and scored 25 goals," he said. "That was four years ago, when I played in a tournament as a center and was captain for that team. No one played great and I was the biggest guy in the league, so I had fun scoring goals."