Korea Baseball Organization
Each team plays totally 133 games per one year. These 133 games are called the pennant race. After the pennant race, top four teams go to tournament. Firstly, semi-final game is called semi-play off. In this Semi-playoff, two teams (3rd and 4th in the pennant race) play the game and a team which wins 3 games of total 5 games goes to the next stage. The next stage is called playoff. And this is also 3 out of 5(A team wins 3 games first, then that team can go to next stage.). In playoff, a team which is a winner of semi-playoff plays with 2nd team in the pennant race. A winner of playoff plays with 1st team in the pennant race. This is called Korean series. This is 4 out of 7. (If a team wins 4 games first, that team becomes the team of that year.) In Korean league, there is also all star game like major league baseball(MLB)in America. KBO manages all of these games.