The team said yesterday that separate scans confirmed Oden has a mid-lateral foot sprain.
Oden was injured in the first quarter of the Blazers' 96-76 season-opening loss to the Los Angeles Lakers on Tuesday night.
"I was trying to go get a rebound, and kind of came down on Derek Fisher's foot on like the third play of the game. I kind of fell and didn't think twice about it," he said after the game.
The 7-foot Oden missed four field goals and two free throws in 13 minutes of play. So he is still searching for his first NBA point. He will miss six to 14 games.
Oden was the top pick in the 2007 draft, but before his rookie season started, it was postponed by microfracture surgery on his right knee.
"I feel bad for him," Roy said. "I know this is a big year for him and he had a lot on his shoulders."
The Trail Blazers also said in a release that Oden's magnetic resonance imaging revealed a couple of avulsions, or fractures, that "are not believed serious and do not require surgery."
Oden could not immediately be reached for comment.
His first game was highly anticipated by Blazers fans, who had to wait to see the top draft pick. The team had not had a No. 1 pick since 1978, when it chose center Mychal Thompson of Minnesota.
After he was held out last season, Oden rolled his ankle in the first practice of the fall. That injury wasn't serious, however, and he played during the preseason, averaging 11.5 points, 7.8 rebounds and 23.7 minutes in six games.
Joel Przybilla will start for the Blazers at center against San Antonio.
Warriors: : Golden State signed Don Nelson to a contract extension, hours before the veteran coach opened his 30th NBA season against New Orleans. The club declined to divulge terms of the deal, but Nelson said last weekend he had all but agreed to a two-year extension to his current deal, which expires this season. Nelson also said the financial terms were roughly the same as those in his first contract, meaning he'll make roughly $12 million in the new deal. The 68-year-old coach is 1,280-954, trailing only Lenny Wilkens in career victories. After stints with Milwaukee, Golden State, New York and Dallas, he rejoined the Warriors in 2006 and immediately led the club to its first playoff appearance in 13 years. Nelson followed with a 48-win season last spring.
Spurs: : Forward Fabricio Oberto will miss the first two games of the season after undergoing treatment for an irregular heartbeat. Oberto told Spurs trainers during practice Tuesday that he felt a fluttering in his heart. A heart test confirmed the abnormal rhythm, known as atrial fibrillation. He underwent a procedure Tuesday night to restore his heart's normal rhythm. The Spurs said Oberto will have daily heart tests for the next five days. If his heartbeat remains normal, he is expected to return Tuesday at home against Dallas. San Antonio opened the season last night against Phoenix. The 33-year-old native of Argentina played in all 82 games last season, averaging 4.8 points and 5.2 rebounds per game.
More Spurs: : San Antonio exercised its third-year option on center Ian Mahinmi's rookie contract yesterday. He is now signed through 2009-10. Financial terms weren't disclosed.
Timberwolves: : Minnesota exercised team options for point guard Randy Foye and swingman Corey Brewer. Foye's fourth-year option is worth nearly $3.6 million. After missing the first 41 games with a knee injury last year, he returned to average 13.1 points, 4.2 assists and 3.3 rebounds. Brewer's third-year option is worth nearly $3 million.
Media: : Fans can subscribe to a full season of live Webcasts of NBA games on NBA.com for the first time without purchasing the TV package, NBA Digital announced. NBA League Pass Broadband will provide access to 40 live games each week and allow for simultaneous watching of multiple games, plus an on-demand archive of games for 48 hours.