EUGENE, Ore. (AP) _ Arthur Lee scored 15 of his 21 points in the second half as No. 6 Stanford continued its push for a top seed in the NCAA tournament by defeating Oregon 73-61 Thursday night.

Stanford (25-5, 15-2 Pac-10) won its fifth straight and matched its school record with 15 conference victories, set in 1989 and tied last year when the Cardinal went on to the Final Four.

Stanford had already clinched its first outright Pac-10 title last week with a 98-83 home victory over Arizona. But with the season finale at Oregon State coming on Saturday, the No. 1 seed in the West Regional is still up for grabs.

Mark Madsen and Tim Young each added 12 points and 14 rebounds for the Cardinal.

Stanford had beaten the Ducks five straight times, including the last four by an average of 22.5 points. But the Cardinal was pushed by an Oregon team facing its last chance at earning an at-large bid to the NCAA tournament.

Oregon (15-11, 7-10) trailed only 49-46 with 15:07 to play, but the Ducks went the next 6:02 without a point. Stanford struggled with its shot, too, but Lee made two jumpers during a 7-0 run to make it 56-46 with 9:05 left.

The Ducks couldn't get closer than seven the rest of the way.

Oregon was led by Yasir Rosemond's 14 points, all coming in the first half on four 3-pointers.

The Ducks, who haven't beaten a Top 25 team this season, still could make the NIT with a win against Cal on Saturday.