BYU had one spurt when it made baskets Thursday afternoon.
But it sure seemed like Oregon answered everything in what turned into a season-ending 87-68 loss at Bradley Center.
The Cougars finish 23-12 after their only lead came at 2-0.
BYU cut a 15-point deficit to 56-53 at the 12-minute mark after Matt Carlino got rolling momentarily.
But Oregon called timeout, and responded with five points during its next two possessions.
Elgin Cook, who had a career-high 23 points, had a 3-point play right out of the Dana Altman-called timeout at 11:55.
The Milwaukee native was followed by Joseph Young, as the lead ran back to eight points and BYU never threatened again. In fact, BYU only had two baskets over the next nine minutes.
BYU shot 32 percent and made 5-of-19 3-pointers.
It was a far cry from when BYU forced overtime at Eugene on Dec. 21 in a 100-96 final score.
It's been exciting for BYU to get back into the NCAA Tournament.
Now, the Cougars have to shoot better.
BYU produced five more shots in the first half against Oregon, but made three fewer times. For that, the No. 10 seed trails, 39-31, against the No. 7 Ducks.
Tyler Haws has nine points to lead BYU, but he's just 4-of-11. His teammates are 5-for-22.
BYU has made just 9-of-32 shots. Oregon is 12-for-27, led by Elgin Cook's 10 points off the bench.
The Cougars have been hounded by constant foul trouble, especially to post players.
Eric Mika has a pair of fouls, as does Nate Austin and Haws. Wisconsin native Luke Worthington has three fouls in seven minutes during his homecoming to Milwaukee's Bradley Center.
BYU trailed by 15 points with 3:07 left in the half when a Worthington foul led to a pair of Jason Calliste free throws.
But the Cougars closed with a 7-0 run. Frank Bartley hit a couple of charity shots and Matt Carlino (1-of-8 from the field) made his only basket on a hard drive off a second-chance opportunity that developed after a Haws shot was blocked.
Mika added a free throw with 41.5 seconds left. Oregon missed a couple of foul shots and BYU squandered its last possession with a turnover.