ORLANDO, Fla. — Glen Davis wobbled his way to halfcourt, woozy. Unable to stand any longer, he went down.

Something the Boston Celtics are also doing themselves.

An inadvertent elbow from Dwight Howard knocked Davis to the ground, but the Celtics are all in a bit of a daze after the Orlando Magic's 113-92 victory Wednesday night in Game 5 of the Eastern Conference final.

A series that was a game away from a sweep a few days ago now has the Celtics taking a 3-2 lead into a pressure-packed Game 6 in Boston Friday night. A potential Game 7 would be in Orlando.

"We need to win one game," Celtics coach Doc Rivers said. "And let's hope it's the next one."

That next one might be even tougher.

The Celtics are facing the possibility of playing without Kendrick Perkins after their starting center picked up his seventh technical foul of the playoffs, a mandatory suspension unless it is overturned. The league reviews all technicals.

No NBA team has won a series after losing the first three games.

The Magic, seemingly lifeless after a blowout defeat in Game 3, suddenly have hope to be the first. They broke out of their series-long shooting slump, making 13 of 25 3-pointers.

"I just feel that if we keep believing in each other and trusting one another and playing as hard as we can, anything's possible," Howard said.

Jameer Nelson scored 24 points, and J.J. Redick had 14 to help the Magic to a frenetic pace that the Celtics couldn't sustain. Howard added five blocks as Orlando built an early 14-point lead that was never seriously challenged.

Rasheed Wallace had 21 points, and Rajon Rondo scored 19 for a Boston team that once seemed on its way to another NBA finals.

Now? The Celtics are stunned — and Boston fans who just watched their NHL team blow a 3-0 lead are getting uneasy.

Howard's elbow inadvertently came down on Davis' face near the basket in the third quarter, and trainers diagnosed the forward with a concussion. Davis, nicknamed "Big Baby," tried to get up as play continued on the other end, almost falling flat as referee Joey Crawford kept him from tumbling to the hardwood.

Davis did not return. Reserve Marquis Daniels also was hit with a similar inadvertent elbow from Howard, leaving him dizzy, and Wallace "tweaked" his back.

Rivers said Davis "blacked out" on the court, and the training staff will examine the forward today.

"I don't know what kind of tests they're going to do with Baby. He's a little delirious anyway," Rivers said, chuckling.

"Point blank. I ain't speaking. I'm all right. I'll be back next game," Davis said, marching through a parting wall of reporters huddled around his stall in the locker room. "That's all you need to print."

The Celtics are two games from infamy, and the pressure is mounting.

Only four times in the history of North American major pro sports leagues has a team won a playoff series after losing the first three games. Such comebacks are something Boston fans know all too well.

It has happened three times in the NHL — most recently by the Philadelphia Flyers over the Boston Bruins earlier this month — and once in baseball, when the Boston Red Sox came back to beat the New York Yankees in the 2004 AL championship series.

It has never been done in the NBA.

Here's the Magic's chance at history.

"We just all believe," Nelson said. "We all believe. We know we can do it."