BOSTON (AP) -The Allen Iverson trade looked good for the Pistons when they handed the Lakers their first loss of the season and snapped Cleveland's eight-game winning streak.

It hasn't helped them against the team they need to beat most.

Rajon Rondo had 18 points and eight assists, outplaying the recent Pistons acquisition and leading the Boston Celtics to a 98-80 victory over Detroit on Thursday night in a rematch of last season's Eastern Conference finals.

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``I saw him play like this in the championship last season,' Iverson said of his fellow point guard. ``Rondo played great. He did an excellent job coming off picks and getting to the basket and making plays.'

Iverson had 16 points and four assists for Detroit, which fell to 4-3 since he was acquired from Denver for Chauncey Billups and Antonio McDyess. Those two helped the Pistons reach the conference finals, where they lost to Boston in six games as the Celtics went on to win their unprecedented 17th NBA title.

The Pistons followed the trade with wins against Los Angeles and Cleveland - two of the top teams in the league. But they've also lost a pair of blowouts to the defending champs since swapping Billups for Iverson at point guard; the Celtics also beat Detroit handily in Iverson's Nov. 9 home debut, outscoring them 30-10 in the second quarter before coasting to an 88-76 victory.

``We're still trying to find our identity, and it's still early in the season,' Pistons guard Richard Hamilton said. ``Any time you lose to a team two times by over 20 points, that's absolutely bananas because we don't play like that.'

The Celtics also said they expect things to change once Iverson has had some of his much-coveted practice time with his new team.

``They've had some great wins, but you have to figure they're only going to get better as the year goes along with Allen Iverson,' said Paul Pierce, who scored just nine points on 2-for-9 shooting - the second time this season Detroit has held him to single digits. ``Even though Iverson is a great player, we don't have to worry about their point guard posting us up.'

The 6-foot-3, 202-pound Billups was a touch matchup for the 6-1, 171-pound Rondo in the playoffs. Iverson is faster, and he came out sizzling on Thursday with seven points and a steal to help the Pistons open a 13-2 lead before Rondo helped the Celtics turn the game into a blowout.

``I would prefer not to play either' Iverson or Billups, Boston coach Doc Rivers said. ``Allen, in the middle of the first, it was like, 'Slow down.' I'm amazed by that guy every time I see him play. The speed and endurance that he has every night is remarkable.'

Kevin Garnett scored 15 in his return from a one-game suspension, and Kendrick Perkins had 10 rebounds before both teams emptied their benches down the stretch.

After scoring 13 of the first 15 points in the game, Detroit then they made just a single free throw over the next four minutes and Rondo answered with three baskets to help Boston tie the game 14-all.

The Celtics scored the first seven points of the second quarter and opened a 40-27 lead with 5:13 left in the half. It was 49-40 at halftime and Boston went on an 18-5 run in the third to turn a 10-point lead into a 75-52 blowout.

Notes: Detroit has been held under 90 points five straight times against Boston. ... Boston finished with Patrick O'Bryant and Gabe Pruitt on the floor. ... Every Celtic on the roster had at least one point and one rebound.