The Penguins played most of the game with four defensemen after Brian Dumoulin and Kris Letang each left because of injury at 16:23 of the first period. Dumoulin has a concussion from a hit by Wayne Simmonds, and Letang was being evaluated for an upper-body injury.
"Those are a tough two guys to replace," Schultz said. "They're two of the more important guys on this team. To lose them early like that wasn't easy. I thought the guys did a good job and played simple. It's unfortunate we couldn't get the win."
Elliott made 30 saves through the second period, including 18 in the first. It was his first start since Nov. 15 because of a lower-body injury, although he played the previous two games in relief.
"It was big in the standings, for sure, against a big rival," he said. "We had a lot of fans in the stands. They braved it, the weather, just as we did out there. It was really fun to play that. ... I definitely didn't want to let the guys down, and they didn't let me down, they came back for me."
The Penguins have lost seven of their past 11 games.
"You've got to move by it, and we've got to learn from it," Crosby said. "I mean, this is kind of a playoff feel, I think, from here on in for us, and sometimes things like this happen."
They said it
"As we've talked with our players over the last couple of days, we're in a playoff mode right now, and that's just the reality of the League with the parity in the League and the three-point games. There's a lot of teams that are in it, and so we've just got to embrace this challenge." -- Penguins coach Mike Sullivan
"Obviously with four minutes to go in the game, there's a lot of doom and gloom staring us in the face, and our guys didn't change. ... You get two goals with the goalie out ... that doesn't happen too often. A lot of credit to the players and the job they did tonight." -- Flyers coach Scott Gordon
Need to know
Crosby and Malkin have played in each of the Penguins' four outdoor games. ... Van Riemsdyk played his sixth outdoor NHL game (three with the Flyers, three with the Toronto Maple Leafs), tied for most with Patrick Kane, Jonathan Toews, Brent Seabrook and Duncan Keith of the Chicago Blackhawks. ... Penguins center Matt Cullen played his 1,496th game, passing Phil Housley for third among U.S.-born players in NHL history. ... It was the 800th NHL game for Giroux, who scored his 11th overtime goal. ... Pittsburgh forward Patric Hornqvist had an assist for his first point in 15 games.
What's next
Penguins: At the Columbus Blue Jackets (7 p.m. ET; ESPN+, FS-O, ATTSN-PT, NHL.TV)
Flyers: Host the Buffalo Sabres on Tuesday (7 p.m. ET; NBCSN, NBCSP, NHL.TV)