"We just kept going after them and going after them," said Brian Beshara, who finished with 24 points. "Getting to the boards and getting to Chris Porter was the key. Then we just kept making shots."
Jabari Smith added 18 points for LSU which earned its second victory over a Top 10 team this season and came up with the second most points scored against Auburn this year. Eighth-ranked Tennessee beat the Tigers 105-76, but Auburn had held its opponents to an average of 59.8 points a game. LSU also beat Oklahoma State when it was No. 11.
Auburn (19-4, 7-3 Southeastern Conference) never found a rhythm against an aggressive man-to-man defense that limited the Tigers to 35 percent shooting from the field. Porter, who averages 14.5 points a game, was held to 10 points before he fouled out with six minutes left.
"That was all Coach was stressing for the game get on Chris tight and get him in four trouble and that's what we did," Smith said.
LSU shot 55 percent from the field and outrebounded Auburn 39-37.
"Our team continued to shoot the ball well from the floor," LSU coach John Brady said. "We got the ball at critical times where we needed to get it and we had some good play from our bench."
LSU (18-4, 5-4) took the lead three minutes into the game and led by as many as 19 points in the second half.
Auburn cut the lead to 68-58 on a 3-pointer by Mack McGadney with 5:03 left in the game. It got within 5-66 on another 3 by McGadney, who finished with 19 points.
Doc Robinson of Auburn had 17 points on 5-of-9 shooting from 3-point range.
"We got out-executed in every area by LSU," Porter said. "We came in here and they were ready for us."
Torris Bright had 13 points and eight assists for LSU, while Stromile Swift had 13 points, 14 rebounds and five blocked shots.
The victory brought LSU within 1 1/2 games of first-place Auburn in the SEC West.
Auburn, which is 12-0 this season when it outrebounds an opponent, had 19 rebounds at halftime 12 on the offensive end compared to 21 for LSU, but trailed 34-22 thanks to dismal shooting. Auburn shot 25 percent in the first half (9-of-34), including 1-of-11 on 3s.
It was just the sixth time this season Auburn trailed at halftime.
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