I'm not sure if I understand your question, but if you're asking how the college baseball playoff work, here's basically how it works:
- There a Regional made up of 4 teams, and it's double-elimination. The winner moves on to the Super Regional; - In the Super Regional, it's a matchup of the Regional winners in a best 2 of 3 games. The winner moves on to the College World Series in Omaha. There should be 8 teams; - In the College World Series, it's back to double-elimination again. The winner out of each bracket moves on to the championship series (best 2 of 3 games).