Amen Klip... still working on that...
Just finished another season... Will post it soon; I will try and explain how it works.
Each division has 18 teams divided into three groups of six. Now, there are three different tables to keep track of:
1) The general table (who is on top and who isn't).
2) The relegation table (the ratio of points in the last three seasons to the number of games played).
3) The Groups table... (how the six teams in eahch group are doing).
This last one is important because at the end of each season, the top two teams of each group (six teams total)pass on to a playoff stage. The best four teams outside of the first six compete for the last two spots in the playoffs. This gives eight teams for the playoffs. The winer becomes the champion for the season. (so no, you don't have to be the best team to be the champ).
Now, there are two seasons per year. In January there is another tournament that is held in the U.S. (for money reasons) with eight teams divided into two groups. The top two teams become Mexico 2 and Mexico 3 for the Libertadores Cup.
And don't ask me how the teams for this tournament are selected because I know nothing of astrology...