SAN ANTONIO -- Tim Duncan attempted San Antonio's first eight free throws and missed them all.

By the end of the afternoon, the Spurs had clanged away their 13-game winning streak.

After struggling from the line in the first half, the Spurs managed just nine baskets in the second half Saturday and lost 83-77 to the Philadelphia 76ers.

Eric Snow scored 18 of his 20 points and Derrick Coleman had 12 of his season-high 20 points in the second half for Philadelphia, which was playing its 10th straight game without top scorer Allen Iverson (bruised right knee).

San Antonio's unbeaten streak dated to Dec. 3 and was the longest in the NBA this season.

Duncan, who scored 11 points and grabbed 13 rebounds, had no field goals in the second half. He finished 3-of-13 at the foul line.

The Sixers snapped a four-game road losing streak and earned their first victory in San Antonio since Jan. 6, 1986, when the Sixers' roster included Julius Erving, Charles Barkley, Moses Malone, Bobby Jones and Mo Cheeks.

"Our whole thing was coming out here and getting a consistent effort," Snow said. "We never even talked about them winning 13 straight or us not having won here in like 17 years. That never came up."

Coleman keyed the 76ers' defense, which forced the Spurs to rely on outside shooting by collapsing on Tim Duncan whenever he got the ball inside.

Coleman also had 11 rebounds.

"We're a lot better ballclub when he plays the way he did tonight," Sixers coach Randy Ayers said. "We got great leadership out of Coleman."

San Antonio shot nearly 50 percent in the first half and 9-for-30 in the final two periods. After Duncan missed San Antonio's first eight from the line, the Spurs shot 19-for-23 the rest of the way to stay in contention.

"They were more physical and more aggressive in every way on the court," Spurs coach Gregg Popovich said. "They took the win and they deserved the win."

Asked if a six-day layoff might have left the Spurs flat, Popovich said: "That's baloney. The last thing I want any of these guys to do is use that as an excuse."

One excuse, however, was the absence of one of San Antonio's best shooters. Manu Ginobili left the game in the first quarter with a lower back strain and did not return. He finished with five points on 2-for-3 shooting.

Hedo Turkoglu made two free throws to tie the score at 67 with 6:36 remaining, but the Sixers countered by scoring 10 straight points over the next three minutes. Glenn Robinson led the burst with a layup and two free throws.

Robinson finished with 16 points and Kenny Thomas had 12 points and 15 rebounds. Turkoglu led San Antonio with 16 points, while Bruce Bowen, Rasho Nesterovic and Tony Parker all added 10.

Bowen said the Sixers' physical play had affected the Spurs' offensive rhythm.

"We're used to getting up and down (the court)," he said. "We got caught up in the thought that we were getting pushed around a little bit."

The Spurs led 38-35 at the break after going 4-for-6 from 3-point range. Philadelphia, limited to 38 percent shooting, stayed close by making all but one of its 10 free throws.

Notes

• The 76ers outrebounded the Spurs 47-34.
• Philadelphia swept the two-game season series.
• Duncan also had three turnovers.
• Robinson had six turnovers, five rebounds and four steals.

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