PHILADELPHIA - "Undisclosed" was the word of the day Tuesday, with three Islanders regulars sitting out the game against the Flyers with injuries that are no longer identified by body section, just that they exist.

Neither Matt Martin nor Frans Nielsen made the bus trip here on Monday, ruling those two out early on. Both forwards went to the locker room for a few minutes during the Islanders' 3-0 win over the Sabres on Saturday, though both returned to the game.

Nielsen apparently aggravated a nagging lower-body injury he's been coping with since Feb. 22. Martin was hit by teammate Eric Boulton's shot in the second period on Saturday.

Cal Clutterbuck was a later scratch yesterday with an undisclosed injury, meaning every extra forward made it into the lineup. Colin McDonald, Tyler Kennedy and Michael Grabner all played after being healthy scratches for 12, two and eight straight games, respectively.

"I'm just trying to take it game by game," said Grabner, who was ill last week but otherwise a spare part for three weeks. "I just do what I can and at the end, we'll see what happens after that."

Streit will root for Isles

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Mark Streit has been in the spoiler's role before -- all too often, in fact. He only reached the playoffs once in his five seasons with the Islanders, and that came in 2012-13, his last with the team.

In his second season with the Flyers, Streit is headed for another early spring when the regular season ends on Saturday. Disrupting the Isles' playoff chances Tuesday night wasn't a driving force for him.

"I don't think it's satisfaction, you just want to play well to the end," Streit said. "You always want to win even if you're not going to the playoffs."

After the game, the last between the Flyers and Islanders, Streit will go back to being a fan of some of his close friends.

"You're happy to see those guys do well," Streit said. "The way they've played, they deserve to be in the playoffs. I'll follow them for sure and hope for the best for them."

Andrew MacDonald, Philadelphia's other former Islander, missed the game with a broken right hand, the third time he's broken a hand in his career. MacDonald missed the last two games of the Isles' 2013 first-round playoff series with the Penguins after breaking his hand on a blocked shot.