PHILADELPHIA, Jan. 8 (Ticker) -- Allen Iverson couldn't have picked a worse time for his sixth foul.

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Iverson fouled out as Chauncey Billups drilled a three-pointer to open overtime, giving the Detroit Pistons the lead for good in a 103-94 victory over the slumping Philadelphia 76ers, who have lost four straight games.

Iverson scored 25 points, including free throws that gave Philadelphia an 88-84 lead with 1:59 left in the fourth quarter. But the 76ers wasted that lead in the final minute of regulation and never led in the extra session.

With 4:04 left in overtime, Iverson reached in and slapped the arm of Billups as he rose for a three-pointer. The shot somehow went in, and Billups' free throw completed a rare four-point play and gave the Pistons a 92-88 lead.

"I just had my hand out there and he went up," Iverson said. "I guess I got a part of his arm."

"AI had five fouls, so I felt like if we got him out of the game, we'd have a better chance," Billups said. "It felt good when it left my hands, but I was more concerned with getting him out of the game."

It was the first four-point play against Philadelphia since Milwaukee's Glenn Robinson did it on January 17, 1996, five months before Iverson was drafted. The All-Star guard fouled out for the ninth time in his career and the first time since November 19, 1999 vs. Portland.

The play deflated the 76ers, who made just 2-of-7 shots and 2-of-6 free throws as they lost at home in overtime for the second straight game.

"It's a good way to start overtime - foul out Allen Iverson and hit a three in the process," Pistons coach Rick Carlisle said. "It's an unbelievable play. Chauncey has been a clutch player for us and that was a clutch play."

"That's about as tough as it can be," Sixers coach Larry Brown said. "Allen fouls out on the four-point play and we don't have anybody trying to score the ball besides Eric (Snow). That's a crime."

Iverson, who had a season-high nine assists, spent the extra session icing down a bruised right quadriceps that has him day-to-day.

"It just got real hard," said Iverson. "This is the first time this ever happened to me. I never had a knee injury or anything like that before. So I was just kind of scared when it happened."

Richard Hamilton scored nine of his 29 points in overtime for the Pistons, who have won three straight games and five of six. They improved to 10-7 on the road.

"Once it went to overtime, we felt as though it was our game, especially when Allen went out," Hamilton said.

Snow scored 19 points for the Sixers, who have lost seven of their last eight games and are 4-12 since a 15-4 start.

"We're just frustrated," Iverson said. "The only thing that can make things better is a win. This makes it tough to even come to work tomorrow after having a game we should have won."

Hamilton's jumper made it 96-92 with 1:49 to play. After Aaron McKie split a pair of free throws, Hamilton made two from the line for a 98-93 advantage with 1:10 left. The Sixers got no closer than four points thereafter.

There were six ties in the fourth quarter. Iverson's jumper in traffic made it 84-84 with 3:16 remaining, but he picked up his fifth foul less than a minute later.

Two free throws each by Kenny Thomas and Iverson gave Philadelphia a four-point lead. Clifford Robinson made two foul shots with 43 seconds to go, and Corliss Williamson won a jump ball from the smaller Snow before making a short hook that tied it with 3.8 seconds left. Iverson missed a runner at the horn.

"It was tough at the end of the fourth," Carlisle said. "Some things didn't go our way. The guys just kept playing and playing and made the most of those final opportunities."

Robinson scored 17 points and Williamson added 14 for the Pistons, who shot 46 percent (36-of-78) as they improved to 3-0 in overtime. Ben Wallace pulled down 12 rebounds and blocked four shots.

Brian Skinner scored a season-high 17 points for the Sixers, who shot 39 percent (31-of-79) and fell to 2-3 in overtime. Thomas had 12 points and 10 boards and Keith Van Horn added 10 and 11.

Williamson scored 10 points in the second quarter, when the Pistons used an 11-1 run to help open a 50-44 halftime lead. They led by as many as nine points in the third quarter before settling for a 70-66 lead entering the fourth period.

Two free throws by Skinner pulled Philadelphia into a 75-75 tie with 7:33 left.