"We stopped playing the way we had success early. We knew they were going to push and we tried to protect a lead. We can't play that way," alternate captain Josh Gorges said. "Every time you sit back you give the other team space, life. That's what happens.
"We've been in enough of these situations having the lead, having to know we have to push for it, be aggressive, play with the puck more in the offensive zone, keep pucks down there, keep them 200 feet from our goal. They're going to get chances. They're going to make plays but we stopped playing."
Jack Eichel posted a goal and an assist in the loss as Buffalo sits with 62 points through 62 games and still chasing a playoff berth.
"We just didn't do enough to win the game. It's frustrating. These are the ones that we need to have and we're just slowly pissing our chances away," Eichel said. "It's frustrating for all of us. I don't know what it is, but we sit back, let them take the puck to us. We don't push for that next one. We're not forcing turnovers. We're not getting in a forecheck.
"It seems like everyone just skates backwards. Every single guy is at fault here. As a group, we've been losing. We didn't do enough to win the game tonight."
Evan Rodrigues also scored for Buffalo and Anders Nilsson, in his first start since Feb. 7, made 26 saves in a very good performance.
Buffalo, however, comes out of their bye week with zero points on this two-game road trip.
"Regardless of the opponents, it can't happen," Sabres coach Dan Bylsma said. "And we just got the feel tonight where you have the two points in your back pocket and you let them slip away."