Spooner has made being quicker to the puck one of his top priorities.
"We've talked about it before and I think the thing with me is I kind of get in there and I'm gliding a little bit," said Spooner, who was credited with two hits in 16 minutes, 32 seconds of ice time against Chicago.
"I think [Cassidy] wants me to get in there and take some strides and just close because all the players are good here. If you give them time and space, they're going to make plays, so as a center, I've just got to try to be a bit quicker."
The Bruins have several young players competing for spots up front, including centers Austin Czarnik, Jakob Forsbacka Karlsson, and Sean Kuraly. And with the likes of Kuraly, Tim Schaller, Noel Acciari, David Backes, and Riley Nash having the ability to play both wing and center, Spooner knows he must do everything he can to separate himself from the others and earn a spot on the roster.
His strong skills on the power play work in his favor (he led the Bruins with 4:18 of power-play time against the Blackhawks). But his success at the faceoff dot needs to improve. Spooner won just 39 percent of his draws last season and was 6 of 14 against Chicago.
"Then the third period, specifically, [I] put him out for a D-zone faceoff and he won one, he won maybe both," said Cassidy. "Just some situations that he knows he has to be harder in. I think the rest of his game will take care of itself. But I thought he was good in that area of the game tonight."