Glen “Big Baby” Davis made a 21-foot jumper as time expired to help the Celtics hold off a furious rally and defeat the Magic 95-94 last night in Orlando to even their Eastern Conference semifinal at two games apiece.

Davis took the pass on the wing from Paul Pierce, swished the jumper over a charging Rashard Lewis and ran to half-court. He was mobbed by teammates, leaving the Orlando home crowd silenced.

“I didn’t see his emotions,” Celtics coach Doc Rivers said. “I was having an emotional highjack at the moment myself.”

Davis’ jumper followed a pair of free throws by Lewis that put the Magic ahead with 11.3 seconds to play. Davis also hit a 15-foot jumper in the final minute and finished with 21 points.

Dwight Howard had 23 points and 17 rebounds for the Magic. Game 5 is tomorrow in Boston.

Rockets 99, Lakers 87

In Houston, Aaron Brooks scored a career-high 34 and Shane Battier sank five 3-pointers and added 23 as the Rockets overcame injured Yao Ming’s absence and routed the Lakers to even their Western Conference semifinal at two games apiece.

Luis Scola had 11 points and 14 rebounds as the Rockets got exactly the team effort they needed after Yao broke his left foot in the Lakers’ victory in Game 3.

Game 5 is tomorrow night in Los Angeles, and anyone who thought the Rockets were finished without their best player only needed to watch the first few minutes yesterday, when Houston built a 22-7 lead.

Pau Gasol scored 30 points and Kobe Bryant had a quiet 15 for Los Angeles.

Lakers coach Phil Jackson warned his team about taking the Rockets too lightly after hearing about Yao’s injury. But the Lakers looked lethargic from the start, giving away careless turnovers and playing lax defense.

The Rockets opened the game with a 22-7 run, starting 4-of-5 from 3-point range. Bryant scored the Lakers’ first three baskets, but the rest of the team missed its first seven shots.

Houston led 54-36 at the break. The Lakers grabbed only two offensive rebounds and generated only four fast-break points in their lowest-scoring half of the season.