BOSTON — Sprawled near the edge of the famed parquet floor, Paul Pierce grabbed his throbbing right knee and wondered if his first NBA finals — the ones he had always dreamed of playing in — were finished.

"A lot was going though my head," Pierce said. " 'It can't be over like this.' "

The Boston Celtics' captain wouldn't quit.

He came back out, carrying the franchise's title hopes with him.

Pierce, who as a kid growing up in Los Angeles used to sneak into Lakers games, returned from a knee injury to inspire and lead Boston to an emotional and tense 98-88 victory last night in Game 1 of these tradition-soaked NBA finals.

Pierce's dramatic return after being carried from the court and then wheeled down a hallway for treatment will be added to the annals of Celtics-Lakers finals lore, taking a spot alongside Magic Johnson's baby sky hook and Kevin McHale's clothesline of Kurt Rambis.

Pierce's comeback drew immediate comparisons to Willis Reed, the former New York Knicks great who once hobbled onto the court of Madison Square Garden before Game 7 of the 1970 finals against the Lakers. Some of the savvy Celtics fans chanted Reed's name in tribute.

"I wasn't trying to imitate him," Pierce said. "I'm just glad I was able to get back out there."

Kevin Garnett scored 24 points, Pierce finished with 22 — 11 after going down — and Ray Allen, the third member of Boston's Big Three, added 19 for the Celtics, who are chasing a 17th NBA championship. The trio was making its first finals appearance, and for a short time it appeared only two of them would finish their long-awaited debut.

With 6:49 left in the third quarter, Pierce was deep in the lane when teammate Kendrick Perkins crashed into him from behind, crumpling Boston's No. 34 to the court. The 10-year veteran, who last summer thought his days with Boston might be nearing an end, had to be carried from the court in extreme pain and was taken to Boston's locker room in a wheelchair.

"When I came down I thought I felt a pop, I thought I tore it," Pierce said. "I couldn't move."

The sight of Pierce leaving drew gasps from some Celtics fans and coach Doc Rivers' heart sunk.

"I thought the worst," Rivers said. "When they carried him off, I just thought it was the knee."

However, everyone's worries were soothed just moments later when Pierce returned to Boston's bench and checked back in with 5:04 remaining. As Pierce jogged onto the court with a black elastic wrap on his knee, Garnett clenched a fist and screamed, "Yes!"

"Everybody was rejuvenated," said Garnett, who had 13 rebounds. "It was good to see him."

Soon, more than 18,000 others were screaming as Pierce made two 3-pointers in just 22 seconds, capping a 15-point quarter and giving the Celtics a 75-71 lead.

"When I got in the back I could put some weight on it," said Pierce, who hobbled into his postgame news conference with his knees wrapped in ice. "I knew I needed to be out there for my team."

Kobe Bryant led the Lakers with 24 points, but the regular-season MVP shot just 9 of 26 from the field as the league's top defensive team kept close tabs on him. Bryant, attempting to win a fourth NBA title — and first without Shaquille O'Neal — had numerous shots rattle out and spent most of his 42 minutes in the game searching for a rhythm.

"I had some good looks, they just didn't go down for me," Bryant said. "I just missed some bunnies. I'll be thinking about those a little bit."

Derek Fisher and Pau Gasol had 15 points apiece and Lamar Odom added 14 for the Lakers, who had won the first two games of their previous three series this postseason. Los Angeles will try to even the finals in Game 2 on Sunday night.

This is the 11th meeting in the finals between the Celtics and Lakers, and the first since 1987 has been treated like the return of a lost friend by basketball fans aching for the days when Magic Johnson and Larry Bird went sneaker to sneaker.

Game 1 lived up to the hype as both teams challenged every shot, sprawling for loose balls and intensely defending their baskets. Bill Russell, Bob Cousy, Jerry West and the rest of the greats who made the rivalry special would have been proud.

With their crowd breaking into the familiar "Beat L.A." chants from the outset, the Celtics took a 77-73 lead after three quarters and quickly pushed their advantage to eight in the fourth following a 3-pointer by James Posey. Fisher and Sasha Vujacic scored to get the Lakers within 86-82, but Pierce countered with a jumper and made two free throws to put Boston up 90-82.

The Lakers again got within six, but Garnett, who missed nine shots in a row, followed up a miss with a ferocious dunk to crown Boston's win.

Unable to find his shooting touch in the first half, Bryant decided to focus on his defense. After 16-year veteran Sam Cassell came off Boston's bench and scored six quick points at the start of the second quarter, Lakers coach Phil Jackson switched Bryant onto the 38-year-old with the aching back and one of the few Celtics who knows his way around the finals.

Although their superstar wasn't doing his usual thing, the Lakers stayed close, and when Pierce had to sit down after picking up his third foul with 5:14 left, Los Angeles went on a 14-6 run — Gasol and Odom scored four points apiece — to open a 51-46 halftime lead.

Surprisingly, it was Fisher, not Bryant, who led Los Angeles at the half with 13 points. Gasol had 12.

Despite their collective lack of finals experience, the Celtics didn't display any nervousness early. Strangely, it was Bryant who appeared to have some jitters, starting 1 for 7 from the field and not getting any clean looks at the basket.

Allen's 3-pointer from the right wing gave the Celtics a 19-14 lead, but the Lakers got a basket from Jordan Farmar, a 3 by Vujacic and Bryant's second bucket to pull within 23-21 after one quarter.

As the clock ticked down toward tipoff, Celtics fans, some who weren't even alive the last time the NBA's two marquee franchises clashed, scooped up T-shirts and bought other finals souvenirs marking the fierce rivalry's rebirth.

On a section of Union Street, adjacent to historic Faneuil Hall and not far from statues of patriot Samuel Adams and hoops patriarch Red Auerbach, Bostonians young and old warmed up their voices with chants of "Let's Go Celtics" and lubricated their throats before walking en masse toward the new "Gah-den," which had never hosted an event of this magnitude.