"They will just hopefully [be out for] maintenance and will be on the ice [Wednesday]," Penguins coach Dan Bylsma said. "The rest of our lineup will be game-time [decisions]."
The Penguins already were set to be without forward Taylor Pyatt because of a lower-body injury and called up forward Harry Zolnierczyk from Wilkes-Barre/Scranton of the American Hockey League in case Kunitz can't play.
Pittsburgh already was shorthanded on defense with Kris Letang not making the trip due to illness. Deryk Engelland could slide in on defense if Niskanen can't play. Bylsma also announced Marc-Andre Fleury would get the start in goal.
"It doesn't look very good for [Wednesday] but we'll see," interim coach Ted Nolan said. "Hopefully he'll be ready [Thursday]."
With Myers out, Chad Ruhwedel rejoins the lineup after being a healthy scratch against the Oilers. Nolan announced Tuesday that Ryan Miller would get the start in goal. Miller took a 3-0 loss to the Penguins on Jan. 27 in Pittsburgh.
"He's a big guy, takes up a lot of space and makes those first saves a lot," Penguins captain Sidney Crosby said of Miller. "So you need to be able to find rebounds and compete in front. They've got some [defensemen] that do a good job of clearing out the front too. So you really have to compete to get to that area and get second opportunities."
Here are the projected lineups for the Penguins and Sabres:
Scratched: Harry Zolnierczyk