OKLAHOMA CITY (AP) -- Megan Betsa threw a four-hitter to help Michigan beat LSU 2-0 on Friday night in the Women's College World Series.
Betsa struck out eight and walked two in seven innings and never allowed a runner to reach third for the Wolverines (52-5), last year's runner-up.
With the game scoreless in the bottom of the sixth inning, Michigan loaded the bases with no outs to chase pitcher Allie Walljasper. Carly Hoover stepped in for the Tigers, but Michigan's Tera Blanco doubled down the right-field line and knocked in two runs.
Blanco, who had two hits, was the only player on either team with more than one.
Michigan advanced to play Oklahoma in a winners' bracket game Saturday night. Michigan senior star Sierra Romero will play against her sister, Oklahoma freshman Sydney Romero.
LSU (50-17) will play Alabama in an elimination game Saturday.