AUBURN HILLS, Mich. -- The Boston Celtics know they will have to make adjustments to win Game 2 of the Eastern Conference semifinals against Detroit on Wednesday night.

But they don't feel their mindset needs to change.

After Boston coach Jim O'Brien tinkered with his game plan during practice on Tuesday, he wasn't worried about the confidence of his players, who trailed the Pistons by as many as 20 points before losing Game 1 by 12.

"We just lost a basketball game, it's not the end of the world," O'Brien said. "We dwelled on what we needed to improve on. ... I couldn't think of any reason why they wouldn't have the utmost confidence."

The Pistons are confident too, but not cocky.

They know they will see a different team than they saw in Sunday's opener of the best-of-seven series.

"Nothing they do will surprise me," said Detroit's Rick Carlisle, who was selected the NBA Coach of the Year on Tuesday.

Carlisle said Detroit was fortunate to play the Celtics at home about 40 hours after they eliminated Philadelphia in Game 5 of their first-round series.

"We caught Boston in the best-possible scenario -- very little rest, very little prep time, off an emotionally charged win," Carlisle said.

Detroit pulled away from the Celtics in the third quarter after making a flurry of long jumpers en route to a team playoff record 12 3-pointers.

Cliff Robinson scored 18 of his 30 points on 3-pointers and Michael Curry, who made just seven 3-pointers during the regular season, was 3-for-3 from beyond the arc.

"We did not do a good job of moving our defense from one side of the court to the other," O'Brien said. "That will be the biggest change you'll see."

The Pistons also did a good job of making Paul Pierce look human, following his 46-point performance against the 76ers last Friday.

O'Brien doesn't think Pierce has to score a lot for Boston to win.

"We aren't a one-man team," O'Brien said. "We feel like there are matchups we can take advantage off."

O'Brien believes Eric Williams, a 6-foot-8 player who can play small forward or shooting guard, can cause problems for Jerry Stackhouse, or whoever is guarding him, in the low post by either scoring, or passing if he's double-teamed.

He also likes Boston's chances with Kenny Anderson running the pick-and-roll.

When the Celtics ran pick-and-roll plays in Game 1, the Pistons switched defenders instead of trying to fight over or under screens. It was a successful tactic because Boston was unable to get much space to shoot 3s, after making 19 against the 76ers.

"I think we surprised them with that," Detroit's Jon Barry said. "If you look at our films all year, you won't see us doing that. So they couldn't have prepared for that."

Boston was also surprised to see Detroit take and make so many 3-pointers.

"They just hit us with a bit of our own medicine," Boston's Antoine Walker said.

One adjustment Detroit made successfully in Game 1 was keeping the league's highest-scoring reserves, led by Corliss Williamson and Barry, on the bench longer than usual.

They sat while starters Robinson and Curry were defending Walker and Pierce well. The Celtics stars shot a combined 14-of-39.

"As this series moves on, hopefully our bench can be more of a factor," Carlisle said. "But guys are going to have to step up defensively in difficult matchups in order to stay on the floor."

Boston, which is in the playoffs for the first time since 1995 and has advanced for the first time since 1992, is 0-3 on the road in these playoffs and has won just two of its last 11 postseason games on the road.

They know that's a trend that needs to stop, especially because Detroit has homecourt advantage

"In order for us to win the series, we're going to have to win one on the road," Pierce said. "We're going to come out with a lot of fire."