Dean McAmmond is wheeled off the ice in Tuesday's 4-2 Senators win. ((Jonathan Hayward/Canadian Press))

Ottawa Senators forward Dean McAmmond was released from hospital Wednesday, after sustaining a concussion in a 4-2 exhibition victory over the Philadelphia Flyers the night before.

McAmmond, 34, was levelled behind the opposing net 2:39 into the second period by prospect Steve Downie, who received a match penalty because he left his feet to make the hit.

The Senators issued a statement that McAmmond "was examined at a local hospital following the game. There were no fractures."

Fights erupted on the ice as Senators forward Patrick Eaves tried to assist team physician Dr. Don Chow, who was attending to McAmmond.

McAmmond was wheeled away on a stretcher by paramedics and transported by ambulance to a local hospital.

Senators enforcer Brian McGratton was assessed a five-minute fighting major, a 10-minute misconduct, and a game misconduct in the brouhaha.

"It was a cheap shot," he said. "There is no part in the game for hits like that.

"A guy cannot defend himself and you take a 40-foot run and jump and hit him. Hopefully, the league takes a look at it."

McAmmond has suffered two concussions in less than four months, the first coming in last spring's Stanley Cup playoffs.

McAmmond posted 14 goals and 15 assists for 29 points in 81 games with the Senators last season, and was a key contributor in the playoffs until elbowed in the face by Anaheim Ducks defenceman Chris Pronger in Game 3 of the Stanley Cup final.

McAmmond was diagnosed with a concussion and did not return in the championship series, which Anaheim clinched in five games.

"Dean, I know well, so maybe I am a little more emotionally attached to what happened [Tuesday]," Edmonton Oilers head coach Craig MacTavish said. "But clearly, this is something the league was very clear that they were going to try to eliminate.

"I guess the only argument you would have for Steve Downie is that he is trying to make a name for himself and get a spot [on the Flyers]. But that's not the way to do it."

Downie, drafted 29th overall by Philadelphia two years ago, was known for questionable hits when he played junior hockey with the Windsor Spitfires, Peterborough Petes and Kitchener Rangers of the OHL.

"Everyone knows his reputation," Senators head coach John Paddock said. "He did it because [Cristoph] Schubert got him with a clean hit inside the blue-line and [Anton] Volchenkov got him in the first period.

"He is trying to make his name or place, whatever. But it was bad, that hit."

Downie's match penalty means he is suspended indefinitely, pending a review by the NHL.

"I don't know what they can do with a player who's probably going to be in the minors," Paddock continued. "But it was one of those totally unnecessary [hits]."

With files from the Canadian Press