TEMPE, Ariz — Oregon State found out the hard way it is more difficult to overcome a 15-point deficit when an opponent is not missing shots.

Five days after their big comeback victory over Southern California, the Beavers fell to No. 16 Arizona State, 69-38, before 7,004 at the Wells Fargo Arena on Thursday night.

OSU was in the game early, trailing only 19-15, before the Sun Devils went on a 20-0 run spanning the final 5½ minutes of the first half and the first 5 ½ of the second half while setting a school record for fewest points allowed in its 543 Pacific-10 Conference games.

ASU extended its 15-point halftime lead by making 16 of 18 second-half field goal attempts — and one of its misses was turned into a second-chance basket.

The Beavers (6-7, 1-2) teetered when they strayed from their patient, workmanlike style that new coach Craig Robinson brought with him from Brown that worked so well in a methodical 62-58 overtime victory over USC on Sunday.

“I don’t want to take anything away from (ASU) — that’s a really good team,” Robinson said.

“We were playing with our game plan (early), but they made a couple of stops and we got frustrated and make it into a three-point shooting game, and that’s just not what we are. We’re sort of a grind-em-out, get-good-shots type of team.

“When you play that way, you can’t beat a good team. Our guys know it. It got away from us a little bit. You can’t let that kind of stuff happen if we want to beat good teams. We started settling for threes, which is what that match-up zone is made for.”

Lathen Wallace, who led the Beavers with 13 points, cut ASU’s deficit to 19-15 with 5:26 remaining in the half, but Oregon State did not score again until Wallace’s baseline floater with 14:17 remaining in the game to make it 39-17.

Wallace was the only Beaver to score in the final nine minutes of the first half and the first of the second. He made 6 of his 10 field goal attempts; the rest of the team was 10 of 34. Oregon State tried 20 three-pointers and made four.

“The shots weren’t falling today. They knocked down open shots and we didn’t,” Wallace said.

Rickey Claitt, who started after suffering an abdominal strain against USC, was the second-highest Oregon State scorer with five points.

Calvin Haynes, who had scored at least 14 points in each of the six games since rejoining the team and was averaging 17.8, had only three points on 1 of 7 shooting.

Haynes echoed Robinson’s assessment that the Beavers were too quick to abandon their style, adding that maybe the next step is learning how to handle victory after an 0-18 Pac-10 season last year.

“It’s a big disappointment,” Haynes said, “but we’re still in a learning process. We’re just got our first Pac-10 win and we have to learn how to act after we win games. Mentally and physically, it’s a matter of going out and sticking with the game plan.

“We didn’t run our stuff like. We didn’t execute. We didn’t knock down our shots. In order to win games, you have to execute. Even though you are down, jacking up shots is not doing any better. Why not run stuff? Why not execute on offense and try to do things, and try to fight back as much as we can?

“I think that’s the easy way out, coming down and jack up a three, then jack up another three, then jack up another three. We not the best three-point shooting team in the world, but we shot a lot like we were today. I think we settled too much. We could have drove to the basket.

ASU (13-2, 2-1) was led by guard James Harden, who had 22 points on 10 of 11 shooting. Center Jeff Pendergraph had 13 points while playing only 22 minutes because of foul trouble.

“It is one of those things we have to learn from,” Robinson said. “I told our guys just because we won a game on Sunday, we can’t change our game plan. We are still learning a lot about being competitive and winning games.

“This was a good lesson for us.”

(20) Arizona St. 69, Oregon St. 38

Oregon St. (6-7): Johnson 2-9 0-0 4, Deane 2-4 0-0 4, Schaftenaar 2-5 0-0 4, Claitt 2-4 0-1 5, S.Tarver 0-2 2-4 2, McShane 0-0 0-0 0, Bjornstad 0-0 0-0 0, Hampton 0-2 0-0 0, Sturner 1-1 0-0 3, J.Tarver 0-0 0-0 0, McConnell 0-0 0-0 0, Haynes 1-7 0-0 3, Wallace 6-10 0-0 13. Totals 16-44 2-5 38.

Arizona St. (13-2): Pendergraph 3-5 1-2 7, Kuksiks 5-10 0-0 13, Abbott 2-5 0-1 4, Glasser 1-1 0-0 3, Harden 10-11 1-1 22, Boateng 1-2 1-2 3, McMillan 2-4 2-2 7, Woods 1-1 1-2 3, Fricchione 0-0 0-0 0, Rohde 0-1 0-0 0, Shipp 3-3 0-0 7. Totals 28-43 6-10 69.

Halftime — Arizona St. 30-15. 3-Point Goals — Oregon St. 4-20 (Sturner 1-1, Claitt 1-3, Wallace 1-4, Haynes 1-5, S.Tarver 0-1, Schaftenaar 0-1, Deane 0-1, Johnson 0-4), Arizona St. 7-17 (Kuksiks 3-8, Shipp 1-1, Glasser 1-1, McMillan 1-2, Harden 1-2, Abbott 0-3). Fouled Out — None. Rebounds — Oregon St. 21 (Deane 7), Arizona St. 27 (McMillan 6). Assists — Oregon St. 6 (Claitt, Johnson 2), Arizona St. 22 (Harden 7). Total Fouls — Oregon St. 11, Arizona St. 12. A — 7,004.