But Greiss will get first crack at the job in the playoffs while Halak continues to recover.
"He's worked hard," Capuano said of Greiss. "You're hoping that he can go in there and do the job for us. I thought [Gibson] played well and Berube's played well when he's in there. We've got three guys. Obviously, Halak's out and he's not going to be ready for Florida. Guys are going to get an opportunity.
"Thomas is a competitive kid. The one thing I like about him is he competes hard, he's focused, he goes about his business. When you do that, a lot of times you get rewarded for that, and that's what I'm hoping happens."
Greiss' teammates often remarked about his personality over the course of the regular season and how it sometimes kept them relaxed during tough times. Perhaps they will need that approach now more than ever.
"We've had four guys win us games," captain John Tavares said of the goaltending. "There's not many teams that can say that. No question, Thomas has really had a great year. That first half, he was so crucial for us, and we were able to give him a little bit more support in the second half and play a little more consistent game.
"He's not a character, but he's a little bit of a laid-back guy. He's got a great approach to the game, a great attitude, and he's extremely talented. He's one of the toughest guys I've faced in practice over my career here. No question he's been huge for us. There's really, I don't think, a mindset change for him. He's just got to go out there and play and be confident with us in front of him."
Despite dealing with numerous injuries down the stretch -- defenseman Travis Hamonic could play Thursday for the first time since March 31 -- the Islanders reached 100 points in back-to-back seasons for the first time in three decades. The next obstacle is to win a playoff series for the first time since 1993.