The 28-year-old won his NHL debut against the Islanders on Monday, when he made 34 saves in a 4-2 victory. Houser hadn't started a professional game since March 7, 2020, with Cincinnati of the ECHL.
"In my career I've usually played better on the second part of a back to back, just, you know, feeling that first game and then kind of using it," Houser said. "I know they say momentum doesn't carry over game to game, but the way that you feel in net could, I think, at least.
"So I felt way more comfortable early and I felt like that was mostly due to playing [Monday] night, getting the jittery legs out of the way and all that, and I felt like I was sharp and I was quick early."
Anders Bjork scored twice and had the only goal in the shootout for the Sabres (15-32-7), who trailed 3-1 in the second period.
Cal Clutterbuck had a goal and an assist for the Islanders (31-16-6), who blew a two-goal lead for the second straight game. Ilya Sorokin made 28 saves.
New York remained in fourth place in the MassMutual East Division, one point behind the Boston Bruins, who lost 4-3 in overtime at the New Jersey Devils on Tuesday. Boston has played one fewer game.
"It was better," Islanders coach Barry Trotz said. "I liked that we were playing north, we weren't messing around. I thought in the second period, we didn't recognize danger. We had three guys really tired. Their two guys came off fresh, and then we just mismanage the puck and I think they ended up with about five chances and a goal. That can't happen."
Bjork made it 3-2 on a redirection of Colin Miller's point shot at 17:37 of the second period, then tied it 3-3 with a shot from the right face-off circle at 10:56 of the third.