"He's in tonight," said Bruins coach Claude Julien. "He feels good."
Horton suffered an upper-body injury during the first overtime of Boston's 4-3 triple-overtime loss in Game 1 Wednesday. He practiced Friday and participated in the team's game-day skate this morning in preparation for Game 2.
"I feel good. I'm ready," Horton said. "I'm ready to go and I'm excited."
Despite missing the majority of overtime in Game 1, Horton said he had no doubt he would be ready to play in Game 2.
"Trying to get ready for Game 2, like any other player here. We need to do better and I feel good physically," he said. "I'm not in any pain. I feel good. I'm ready to play. I'm excited to get going here."
Horton, who has reportedly been dealing with a left shoulder injury since a fight with the Pittsburgh Penguins' Jarome Iginla on April 20 and missed the final five games of the regular season, would not discuss the specifics of the injury after the skate.
"I'm not going to talk about it," he said. "Like I said, I'm ready to play."
The Bruins' top line of Horton, David Krejci and Milan Lucic has combined for 57 points in the Stanley Cup playoffs. Horton said it was tough to watch the rest of Game 1, and he's not worried about being targeted in Game 2.
"It's the playoffs. Everyone's playing physical, everyone's playing strong. It's the way the game is out there," Horton said. "I have no limitations. I'm good to go."