Justin Graham's three-point play with 2.8 seconds remaining gave San Jose State the lead, and the Spartans survived a last-ditch 3-point attempt by Oregon to win 75-72 Saturday.
A 3-point shot at the buzzer by Jay-R Strowbridge fell short for the Ducks (3-1).
Adrian Oliver, who averaged 29.5 points in the first two games for the Spartans (3-0), scored 19. Keith Shamburger also had 19 points for the Spartans, Graham finished with 12 and Wil Carter added 11 points and eight rebounds.
Joevan Catron scored 25 to lead the Ducks, which included eight straight points late in the game to put Oregon ahead 72-70 with 2:40 to play.