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.