If this is the season MLS finally breaks through and ends Mexican teams' dominance in the CONCACAF Champions League, Liga MX will still have nine titles to point to should any question its regional dominance.
Chivas and America, who Tuesday will play the second legs of semifinal series against MLS teams that hang in the balance, know better than anyone that you can't simply point to history to save face. They're Mexico's most successful clubs historically. Both have 12 league titles to their names. It's not enough. Fans demand the title every season, especially with their rival able to claim bragging rights should they lift another league trophy.