CORVALLIS, Oregon — Arizona Coach Sean Miller was critical of his No. 7-ranked team's defense in the second half of a 58-56 loss at Oregon State Sunday night.
"If we would have been able to get any kind of stops, we would have been able to open up a four, six, eight point lead," Miller said. "Our offense in the second half was plenty good enough."
Conference championships aren't won or lost with a single regular season game, especially on the road, Miller added.
"We have to learn from this game. We didn't deserve to win," he said.
Langston Morris-Walker made a go-ahead layup with 26 seconds left for Oregon State as it beat Arizona for its first win over a top-10 team since 2000.
Arizona's T.J. McConnell missed an off-balance shot with 1 second left, and Oregon State fans rushed the court at Gill Coliseum.
Morris-Walker had 12 points and eight rebounds, and Gary Payton II had 10 points and nine rebounds for the Beavers (11-4, 2-1 Pac-12).
"In our circle, we knew what we were capable of, so this doesn't come as a surprise to us," Morris-Walker said.
"I think all that it proves is it's tough in this conference to win on the road," Beavers Coach Wayne Tinkle said. "At the end, we made one more play than them."
McConnell had 13 points and six assists, and Rondae Hollis-Jefferson scored 14 points for the Wildcats (14-2, 2-1), the third top-ranked team to lose Sunday. No. 2 Duke lost to N.C. State and fourth-ranked Wisconsin was defeated by Rutgers.
A gritty, defensive matchup, there were 20 lead changes and 15 ties. Neither team held more than a four-point lead.
The Beavers took a 56-52 lead with 1:33 left after Malcolm Duvivier was fouled on lay-in and made the free throw for a three-point play. Gabe York responded for the Wildcats with a 3-pointer with 1:07 remaining.
Duvivier missed another lay-in, and Oregon State fouled Hollis-Jefferson on the rebound. He made one of two to tie it 56-all.
Payton came into the game leading Oregon State with 12.4 points, 8.1 rebounds and 2.9 steals per game. The junior college transfer is the son of former Beaver All-American and NBA star Gary Payton.
Freshman Stanley Johnson came into the game leading Arizona with 14.4 points and 6.9 rebounds per game. He had scored in double figures in the previous 14 games, but had seven points on Sunday.
Arizona: Had won seven in a row over Oregon State before Sunday. ... The Wildcats have been in the top 10 in the AP polls for 29 straight weeks. ... Arizona ranked fifth nationally with 408 free throw attempts entering the game.
Oregon State: Its last win against a top-10 team came on March 2, 2000, when the Beavers upset No. 3 Arizona 70-69 at Gill Coliseum. ... The Beavers are 10-0 at Gill Coliseum, their best home start since the 1998-99 team did the same.
Arizona only had five turnovers, compared to 10 for the Beavers. "We did an excellent job taking care of the ball," Miller said.
While Arizona went 8 for 10 on free throws in the first half, the Beavers didn't make it to the charity stripe. That changed in the second half, when Oregon State went 13 for 17 from the foul line. Arizona made only 10 of 17 free throws after the break.
Arizona: hosts Colorado on Thursday.
Oregon State: plays at Washington on Thursday.