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PHILADELPHIA — Samuel Ersson left the Philadelphia Flyers’ 3-0 loss to the Boston Bruins at Wells Fargo Center on Saturday during the first period because of a lower-body injury.

The goalie exited with 12:24 remaining after stopping all eight shots he faced. He had lost the blade of right skate with 13:10 left and was removed not long after.

The Flyers did not have a timetable for how long Ersson could be out. He was replaced by Aleksei Kolosov, who made 20 saves in his second NHL game.

“I thought he fought,” Flyers coach John Tortorella said. “It’s a [heck] of a spot we put him in. … I thought we played hard in front of ‘Koly.’ I don’t think there’s going to be a problem there at all. He’s got some personality to his game. He fights.”

Ersson is 4-2-1 with a 2.68 GAA, .901 save percentage and one shutout in nine games (eight starts). He won three consecutive starts with a 2.00 GAA and .917 save percentage entering Saturday.

“He just quietly goes about his business,” Tortorella said after Ersson made 20 saves in a 2-1 win against the St. Louis Blues on Thursday. “The team likes playing in front of him. He’s an easy guy to pull for.”

Now it could be Kolosov’s turn to play. The 22-year-old rookie was recalled from Lehigh Valley of the American Hockey League on Oct. 26. He made his NHL debut the next day, allowing four goals on 24 shots in a 4-3 loss to the Montreal Canadiens in Philadelphia.

Kolosov stopped 15 of 16 shots in the final two periods Saturday and said he began to feel more comfortable as the game progressed.

“It always gives you confidence when you make saves and it helps when you get in the game,” Kolosov said through a translator. “Feel a lot better, was more understanding the game so feel a lot better today in the game.”

The Flyers are still getting to know Kolosov but felt good about what they saw Saturday.

“He made some big saves,” captain Sean Couturier said. “He kept us in it. They were outshooting us most of the game and he kept us in there, gave us a chance, and that’s what you want from your goalie. I don’t know him a whole lot yet, but he fights for pucks and doesn’t give up. I like what I see.”

Philadelphia has been carrying three goalies since Kolosov was called up. Ivan Fedotov was scratched for the fourth straight game.

The Flyers visit the Carolina Hurricanes on Tuesday.