In the first period of Monday night's win, Bjork put home a feed from Bergeron to make it 3-0, after Marchand and Bergeron combined to force a turnover in the offensive zone.
"The competition will stiffen for him, we'll keep evaluating that, but still, he's got skill, speed, and he's got courage," Cassidy said. "He gets to the dirty areas, he's hard to play against there, second effort on pucks, it's not one-and-done with him, and for a young kid, that's special, to be able to hang in there and battle for those turnovers."
"That's usually the part of the game you've got to continue to grind on them," said Cassidy. "He's got a lot of that, and maybe that's a bit of Bergy and Marchy's influence, I'd like to think they have some of that, because that's their game - Marchy never quits, Bergy never quits."
"They're going to be a hard line to play against, if they're that dogged on the puck every shift."
Bjork's play has impressed Bergeron during camp.
"He's got that speed and the smarts to get open and find the openings in the quiet ice," said Bergeron. "It was a great play by him just to get open and for me to see him. He made it really easy. He skates well, he made some great plays, we just need to keep talking and finding each other more and more on the ice."
The goal marked Bjork's second of the preseason and his first playing on a line with Marchand and Bergeron.
"I think they made a lot of nice plays for me tonight and they did the other night too, so it was nice to finally finish one," said Bjork. "Marchand made a nice play to force a turnover and then Bergeron put it right on my stick, so it was a pretty easy goal to score."