The Clausura 2018Liga MX championship stage commonly known as Liguilla (playoffs) was played from 2 May 2018 to 20 May 2018.[1] A total of eight teams competed in the championship stage to decide the champions of the Clausura 2018 Liga MX season. Both finalists qualified to the 2019 CONCACAF Champions League.
Source: Liga MX Rules for classification: 1) Points; 2) Goal difference; 3) Number of goals scored; 4) Head-to-head results between tied teams; 5) Number of goals scored away; 6) Highest relegation coefficient; 7) Fair Play points
Format[]
Teams are re-seeded each round.
Team with more goals on aggregate after two matches advances.
Away goals rule is applied in the quarterfinals and semifinals, but not the final.
In the quarterfinals and semifinals, if the two teams are tied on aggregate and away goals, the higher seeded team advances.
In the final, if the two teams are tied after both legs, the match goes to extra time and, if necessary, a shoot-out.