The Rangers controlled play for most of the first two periods, outshooting the Flyers 23-11, including 14-4 in the second, and holding a 50-23 advantage in attempts. They hit the post on three of their 17 missed shots through 40 minutes.
Vincent Trocheck hit the left post on a net-front redirection at 8:18 of the first period, Zibanejad had a slap shot go off the post at 12:17 of the second period, and Kreider's shot on a short-handed breakaway found iron 2:30 later.
Alexis Lafreniere
also hit the left post with a backhand from the slot at 5:13 of the third period.
Philadelphia coach John Tortorella called the second period "a major struggle," but he also said periods like that are to be expected early in the season, especially without veteran forwards Sean Couturier, James van Riemsdyk and Cam Atkinson in the lineup.
Couturier is out 3-4 months following back revision surgery on Thursday. Van Riemsdyk underwent surgery to repair a broken left index finger Friday, and Atkinson has not played this season because of an upper-body injury.
"We got some guys that it's baptism by fire here against one of the top teams in the League," Tortorella said. "We start off the period with a couple turnovers. They gain some momentum on a power play and we're chasing our tail. It's going to happen. We're going to have to live through it. Carter is going to have to play like he did tonight in certain times of games when we're in that mode. He's going to have to keep us in there and we just have to try to find a way after that. I thought our third period was much better."
New York outshot Philadelphia 6-0 in overtime and finished with a 73-40 advantage in attempts, including the four shots that went off the post.
"That's obviously four good looks, opportunities," New York captain Jacob Trouba said. "Obviously, it's good to win games when you get those opportunities and they're not going in, but hopefully those start going in for us and things start getting better on that front. It's not bad. We're generating the shots and the opportunities. Just keep doing what we're doing, they'll go."
NOTES: Rangers forward Filip Chytil missed his fifth straight game with an upper-body injury and forward Vitali Kravtsov missed his second in a row with an upper-body injury. … Hart is 5-0-2 in seven starts. It is the fourth-best record to start a season in Flyers history, behind Pete Peeters (22-0-5 in 1979-80), Bob Froese (9-0-1 in 1982-83 and 7-0-0 in 1985-86) and Dominic Roussel (8-0-0 in 1993-94).