Brady Thomas singled in the winning run in the 12th inning and South Carolina eliminated Oklahoma from the College World Series with a 3-2 victory Thursday night at Rosenblatt Stadium.
The Gamecocks (50-16) were down to their last strike against closer Ryan Duke when Jackie Bradley's full-count base hit past first baseman Cameron Seitzer brought in Robert Beary from second to tie it.
Duke walked Jeffery Jones before Thomas drove his first pitch into center field scoring Bradley from second and touching off a celebration in the middle of the infield.
Oklahoma (50-18) took a 2-1 lead in the top of the 12th on Tyler Ogle's homer off Ethan Carter.
Tyler Webb (3-2), the Gamecocks' sixth pitcher, got the win after relieving Carter. Duke (3-2) took the loss.
South Carolina plays in-state rival Clemson in the Bracket 2 final Friday night. The Gamecocks would have to beat Clemson twice to reach next week's best-of-three championship round.