"I'm excited. You want to play in games, you get to a point where you're just practicing and skating around all summer," said Krug, who underwent surgery on his right shoulder on April 21.
"You want to get into some live action where you can get in there and compete against a guy in a different jersey. I'm excited."
Krejci, who had a procedure on his left hip on April 25, began taking part in battle drills last week. His timeline accelerated from there.
"Looking forward to it, pretty excited," said Krejci, who will skate in the middle of Ryan Spooner and David Backes. "It's been a pretty good training camp, especially last week I was able to do battle drills.
"I feel like I'm pretty good. Obviously games are a little different than practices but I felt pretty good last week - good to go."
Bruins Head Coach Claude Julien hopes the game action helps both players get back up to speed.
"They've practiced, but then they haven't played games," said Julien. "So, it's good that we're able to get them into some preseason games here and give them a chance to, I guess, get up to the standard of everybody else, that they're in right now.
"Hopefully that happens. They've looked good in practice so we'll see how they handle tonight."
Julien had no worries about either player's readiness. He knows both are itching to get back in the mix.
"The thing that sticks out to me is they're excited to play," said Julien. "And that's usually a pretty good sign - none of them are hesitant. If anything, they can't wait to play.
"That's a good sign for me and from the medical staff; there are no issues there. They're cleared to play."