PHILADELPHIA (AP) _ Tim Duncan had 26 points and 10 rebounds and Samaki Walker added 23 points, including the game winning-basket, as the San Antonio Spurs defeated the Philadelphia 76ers 98-97 Sunday night in both team's preseason opener.

In front of a boisterous crowd of 19,353 at the First Union Center, Duncan dominated in 25 minutes but sat out the entire fourth quarter.

The Spurs led 74-66 after three periods, but the 76ers, who trailed 81-72 early in the fourth, scored 14 unanswered points to take an 86-81 lead with 7:18 to go.

The teams exchanged baskets, with neither team going ahead by more than three in the final seven minutes. Nazr Mohammed's hook shot gave Philadelphia a 97-96 lead with 1:15 to go, but Walker followed with a turnaround jumper with 1 minute left to give the Spurs a one-point lead. A final desperation heave by Doug Overton fell short at the buzzer.

Duncan was 7-for-13 from the field and 12-for-15 from the foul line for the Spurs, who played without center David Robinson, listed as day-to-day with a stiff lower back.

Larry Hughes had 19 points to pace the 76ers while Allen Iverson, who missed his first six shots, had 15 points on 5-for-17 shooting from the field. Aaron McKie added 11 points.

Led by a group of mostly reserves, Philadelphia's 14-0 run came thanks to a full-court press defense and an up-tempo offense. Rookies Jumaine Jones and Todd MacCullough, playing his first minutes of the game, joined second-year player Hughes and veterans McKie and starter George Lynch as the 76ers grabbed an 86-81 lead, their first advantage since early in the first quarter.

San Antonio opened a big lead with a 20-7 run that spanned the end of the second quarter and the beginning of the third.