Philadelphia, PA (My Sportsbook) - Chauncey Billups drilled his third three- pointer of the overtime with 15.2 seconds remaining in the extra session for the go-ahead points to lead the Detroit Pistons over the Philadelphia 76ers, 93-89, in a clinching Game 6 of their Eastern Conference Semifinals series at the First Union Center.

Billups, who missed Games 2, 3 and 5 and was questionable for this one with an ankle injury he suffered in Game 1, finished with a team-high 28 points and added seven rebounds as the Pistons won the series, 4-2.

"We went into overtime, and I just told them right before the timeout, 'I am about to take this game over.' I told them and they were like, 'alright.' I was very, very aggressive in the overtime. I tried to look for my shot and just try to keep the game going," Billups said.

Richard Hamilton tallied 19 points for Detroit, which fought back from a 14- point deficit to advance to the conference finals for the first time since 1991 when they were swept by the Bulls. The Pistons, who became the first road team to win a game in the series, will have home-court advantage against New Jersey in the next round.

Allen Iverson collected 38 points and nine assists for the Sixers, who were looking to become only the eighth team ever to come back to win a best-of- seven series when going down 0-2.

"I feel bad, obviously, because this is another season gone by and my dream didn't come true," said Iverson. "I think it's a lot I need to look in the mirror at myself. There is a lot more I can do to make us a better team, playing the game and verbally. There are just a lot of things that I understand that I have to do to get better plus to have a chance to win a championship. I am just going to put that pressure on myself in the offseason to try to do a little bit more than I have been doing."

The Pistons started the overtime with an 8-2 burst to take an 89-83 lead after two threes by Billups and a dunk by Tayshaun Prince with 2:39 to play.

But the Sixers battled back and responded with six unanswered points by Iverson to tie the game at 89-89 with just 1:12 left.

After each team failed to score on its next possession, Billups drained his game-breaking three-pointer to put the Pistons in front, 92-89.

The Sixers called a timeout and decided to go for the quick two. Iverson drove through the lane, but his shot rolled off the rim and into the hands of Ben Wallace.

With just six seconds remaining, Chucky Atkins was fouled and nailed 1-of-2 free throws to seal the win for Detroit as the Sixers were out of timeouts.

The Pistons only shot 34 percent from the floor and were outrebounded, 51-44, but they forced 17 Philadelphia turnovers and outscored the Sixers, 33-14, in points off the bench.

Eric Snow made a jumper with a hand in his face with just 27.3 seconds left in regulation to give the Sixers an 81-79 edge.

But Billups also played a huge role in the end of the fourth quarter by knotting the game on two free throws at 81-81 with only 14.6 seconds left.

On the quarter's final possession, the Sixers had a chance to win the game, but failed to get a shot off to set up the Pistons' 10th overtime win this season in as many tries.

"We haven't had a lot of things go our way," Sixers head coach Larry Brown said. "The thing that's amazing to me, is that we just keep trying. The biggest thing is they (Detroit) made plays. We made some bad plays at the end."

Corliss Williamson scored 17 points and Prince netted 14 for the Pistons.

Derrick Coleman contributed 14 points and 11 boards, while Kenny Thomas also recorded a double-double for Philadelphia with 12 points and 14 rebounds.

The Sixers got off to a quick start by scoring 16 unanswered points in the first quarter. Coleman capped off the run on a three-pointer with 2:32 left to put Philadelphia ahead, 20-8.

In the opening period, the Pistons failed to get to the foul line and allowed the Sixers to shoot 55 percent from the floor as they trailed 24-15 after 12 minutes.

However, in the second period, the Pistons battled back with a 14-2 run to tie the game at 30-30. Williamson drained two free throws with 4:24 left to complete the surge, but the Sixers responded by posting 14 of the final 20 first-half points to take a 44-36 advantage into the intermission.

Coleman completed the first-half scoring on a dunk with only 1.2 seconds remaining, but it was Iverson who led the Sixers with 21 points in the opening 24 minutes.

Detroit only shot 32 percent from the floor in the first half.

The Pistons used a 19-6 run in the third period, capped by Hamilton's field goal with 1:37 left in the frame, and went in front 59-57.

The two teams exchanged leads for the remainder of the stanza and Philadelphia led 64-63 heading into the final quarter due to a Greg Buckner field goal with 1.1 seconds left.

"The Philadelphia 76ers, to me, are a really class team," said Pistons head coach Rick Carlisle. "I can't say enough about what Larry Brown means to basketball. I'm a huge fan of his. They (Sixers) really compete hard and play the right way. We are real fortunate to have had the chance to advance against a team like Philadelphia. It's a feather in our cap as a franchise."