That's why the intrasquad scrimmages that the Bruins will hold later this week will become critical in paring down the roster ahead of the team's Jan. 14 opener against New Jersey.
"How are guys progressing this week? How do they do in the scrimmages because that's the evaluator for us a little bit, the scrimmages," said Cassidy. "We don't have exhibitions. They're just taking the place of exhibition games. Some of these young guys get pushed up and if so, we keep them in the main group. We've got a lot of capable players, lots of depth.
"We'll pare down and make some tough decisions. That's why guys that are missing time now, it's unfortunate for them. But that's kind of the hand we're dealt this year with the short camp."
In normal circumstances, it can take a couple of weeks before the team makes any significant cuts, but Cassidy expects his group could begin to take shape by this weekend with a scheduled day off for the players likely coming on Saturday.
"I would suspect Sunday we would start getting to look more like the Bruins and the second group will look more like a potential taxi squad and Providence, however that plays out down the road," said Cassidy. "We'll sit down Saturday…then look at where everyone is at. For example, how is Brad [Marchand] progressing? We feel that he'll be on time for the start of the year.
"No matter what, he's gonna get that opportunity, but that might affect some other decisions. We know [David Pastrnak] is not gonna be there, so who has the best opportunity to play in that spot?"