Adam Plutko and two relievers limited LSU to five hits, and UCLA turned both of the Tigers' errors into runs in a tense 2-1 victory at the College World Series on Sunday night.
The Bruins (45-17) will play North Carolina State on Tuesday. The No. 4 national seed Tigers (57-10) will meet North Carolina in an elimination game.
LSU scored its only run on Mason Katz's fourth-inning homer. The Tigers had defensive breakdowns that allowed the Bruins to tie it in the sixth and take the lead in the eighth.
Plutko (9-3) allowed four hits in seven innings for the win. David Berg worked out of trouble in the ninth to earn his 22nd save.
Aaron Nola (12-1) gave up five singles in eight innings, and both runs against him were unearned.