PORTLAND, Ore. - Portland Trail Blazers guard Arron Afflalo will be out one to two weeks because of a right shoulder strain.

Afflalo injured his shoulder during the Trail Blazers' 116-105 loss at Golden State on Thursday night. He had an MRI on Friday that ruled out a more serious injury.

Acquired at the trade deadline from the Denver Nuggets, Afflalo has been a key contributor to the Blazers in the absence of starter Wesley Matthews, who is out for the season because of a ruptured Achilles.

Afflalo has averaged 13.3 points, 3.2 rebounds and 1.7 assists this season. He should return to the Blazers in the first round of the playoffs.