The tournament has 100 participating teams, all the U-19 and U–17 teams that are part of the youth academy structure of the 18
Liga MX clubs, 18 clubs from
Liga Premier and 46 clubs from
Liga TDP. All participants are selected by invitation, both tournaments consists of five stages (Group stage, Round of 16, Quarter-finals, Semifinals and Final). The Copa Promesas LMX-LP has 36 participating teams divided into nine groups of four clubs each by geographic location. The nine group winners and the seven best runners-up qualify for the final knockout phase. The Copa Promesas LMX-TDP has 64 participating teams divided into 16 groups of four clubs each by geographic location. The sixteen group winners qualify for the final knockout phase. All matches in the final phase are played on the field of the lower division club. During the group stage, if the matches end in a tie a
penalty shoot-out is played to award an extra point. Since the 2025 edition, the competition is held during September and November as a mid–week tournament for the Liga Premier and Liga TDP clubs, in addition to giving activity to the youth teams of the Liga MX. ==Results==