Jack Moore's 12 points and bal-handling against Missouri's second-half press carried Nebraska to a 67-51 Big Eight upset of the No. 1-ranked and previously unbeaten Tigers last night in Columbia, Mo.

Greg Downing had 14 points and Claude Renfro 11 as Nebraska, despite three starters fouling out, ended Missouri's school-record 29-game home winning streak.

It was the Cornhuskers' first win in Columbia since 1974. Last month, Missouri (19-1) had won at Nebraska, 44-42.

"We finally got to a point where we didn't have a good day and the other team did," said Coach Norm Stewart. "We always figured out a way to win. But not tonight."

The Tigers shot only 34 percent, lost the ball 17 times, were outrebounded, 35-32. It was only the second time in 20 games this season that Nebraska, whose tallest player is 6 feet 7, had out-rebounded an opponent.

Nebraska beat Missouri at its own game, depth and free throws, as Coach Moe Iba used nine players, all of whom scored. The Cornhuskers also made 20 of 24 free throws the second half to frustrate the Tigers and a hostile home crowd of 12,200.

Moore scored six points to send the Cornhuskers off on a 21-6 run during an 11-minute span in which they took a 23-10 lead.

Missouri countered with nine straight points, four off long-range baskets by Jon Sundvold, to close to 23-19. Kenny Walton entered the game to score four points in the last 64 seconds and give Nebraska a 29-21 halftime lead.

The Tigers missed their first four shots of the second half as Nebraska got eight points from Downing, Moore and Andy Johnson to open a 39-23 lead.

Missouri then went into a full-court press and used turnovers to draw to 44-38. Steve Stipanovich scored six points and Sundvold four to spark that spurt.

But Moore broke the press with a dazzling display of ball-handling in the back court and passed to Downing and Terry Smith at the other end for dunks to rebuild the lead to 10. The Cornhuskers used those baskets as the impetus for a 13-1 spurt that put the game away at 57-39 with 12:12 remaining.

Nebraska's final 10 points came at the free-throw line. Downing, Smith and Handy Johnson all fouled out, but their loss did not prevent Nebraska from improving its record to 12-8 overall, 4-4 in the Big Eight.

Stipanovich and Sundvold each scored 13 to lead Missouri, which fell to 8-1 in the conference.