The 2004 Mexican League season was the 80th season in the history of the Mexican League. It was contested by sixteen teams evenly divided into two zones: North and South. The season began on 16 March and ended on 3 August with the last game of the Serie del Rey. Piratas de Campeche won its second championship after defeating Saraperos de Saltillo in the Serie del Rey 4 games to 1, led by manager Francisco Estrada.^[1][2][3][4]

Prior to the beginning of the season three teams were replaced. Rieleros de Aguascalientes bought the Cafeteros de Córdoba franchise, Tuneros de San Luis took over Broncos de Reynosa and Toros de Tijuana replaced Tecolotes de los Dos Laredos. The number of games also changed from the previous season, from 113 to 100 per team.^[5]

Batting leaders[7] Stat Player Team Total AVG Demond Smith Monterrey .406 HR Izzy Alcántara Laguna 27 RBI Roberto Saucedo México 97 R Morgan Burkhart Saltillo 100 H 3 tied with[note 1] 129 SB Rontrez Johnson Aguascalientes 54

Pitching leaders[8] Stat Player Team Total ERA Francisco Campos Campeche 1.47 W Francisco Campos Campeche 12 K Francisco Campos Campeche 99 IP Osvaldo Fernández Tabasco 123.2 SV Santos Hernández Tigres 26

• Francisco Campos (Campeche): Campos became the sixth pitcher in the Mexican League history to win the Triple Crown, recording 1.47 ERA, 12 wins and 99 strikeouts.^[9][10]

• Rafael Roque (Tigres): On 11 April, Roque threw the seventh no-hitter in franchise history by defeating the Langosteros de Cancún 1–0 in seven innings.^[11]

Award	Player	Team	Ref.
Pitcher of the Year	Francisco Campos	Campeche	[9]
Rookie of the Year	Santiago González	Veracruz	[12]