Falk sustained his injury late in the preseason, following a camp in which he felt he had done well to impress Phil Housley and his coaching staff. He served as a reliable, physical defensemen last season, but has looked to employ his skating ability more in Housley's system.
"I though the preseason went well," he said Wednesday. "I was moving well, I was being physical, I was bring the elements that I need to bring."
Seth Griffith will take Bailey's place on the right wing playing with Zemgus Girgensons and Sam Reinhart. Housley said that Nicholas Baptiste's inclusion in the lineup will be a game-time decision, although Baptiste did not take first reps in line rushes during the morning skate.
Baptiste was recalled for the first time this season on Wednesday morning, and even if he doesn't play, he said he's happy to be with the Sabres.
"It's an honor to be back up here," he said. "This team is where I want to be for my career. I want to be playing Buffalo and I want to play for the Sabres. I've got to continue to work hard to make that a reality."
Baptiste made his NHL debut last season and went on to score four points (3+1) in 14 games with the Sabres. He came into camp this fall with his eyes set on securing a roster spot, but was reassigned to Rochester on Sept. 28.
After an admittedly slow start with the Amerks, he notched back-to-back multi-point outings in Rochester to put himself in a tie for the team lead with three goals.
"One of the reasons, from just watching him on film, is I think he's getting to the net harder," Housley said. "He's cleaning up some second opportunities, which is good because that's an area of focus that we've had as a group."
Baptiste said his turn-around - and what will make him successful at the NHL level - is about more than production.
"I wasn't working hard enough in my own end," he said. "I was too worried about scoring and getting points and contributing offensively. I got away from playing hard and playing fast. That's just kind of what I have to get back to."
Should Baptiste not be in the lineup Thursday, Housley said it will serve as a chance for him to watch and adjust mentally to the speed of the game. He'll have another chance to enter the lineup when the road trip concludes in Dallas on Saturday.
"I'm not going to come in here and steal somebody's job on the top line," Baptiste said. "I've got to earn my way up. I may start on the fourth line. It's just working hard and doing the little things to help this team win."
Coverage on Thursday begins at 9:30 p.m. with GMC Gamenight on MSG-B, or you can listen live on WGR 550. The puck drops at 10 p.m.