The 2003 Mexican League season was the 79th 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 18 March and ended on 29 August with the last game of the Serie del Rey. Diablos Rojos del México won its 14th championship (and second back to back) after defeating Tigres de la Angelópolis in the Serie del Rey 4 games to 1, led by manager Bernie Tatis.
Algodoneros de Unión Laguna were rebranded as Vaqueros Laguna, changing its main color from maroon to orange.
Standings + North Pos Team W L Pct. GB Pts. 1 Diablos Rojos del México 68 40 — 15 2 Saraperos de Saltillo 62 45 5.5 14 3 Sultanes de Monterrey 66 43 2.5 13.5 4 Pericos de Puebla 62 48 7.0 12 5 Tecolotes de Nuevo Laredo 53 56 15.5 10.5 6 Acereros de Monclova 49 59 19.0 10 7 Broncos de Reynosa 43 63 24.0 9 8 Vaqueros Laguna 39 71 30.0 9
+ South Pos Team W L Pct. GB Pts. 1 Tigres de la Angelópolis 72 34 — 16 2 Leones de Yucatán 61 45 10.5 13.5 3 Guerreros de Oaxaca 57 52 16.0 12 4 Piratas de Campeche 55 51 16.5 12 5 Olmecas de Tabasco 49 59 23.5 11 6 Rojos del Águila de Veracruz 50 54 20.5 10.5 7 Langosteros de Cancún 44 63 28.0 10 8 Cafeteros de Córdoba 29 75 41.5 8
Postseason
League leaders
+ Batting leaders Stat Player Team Total AVG Félix José México .377 HR Guillermo García Tigres 28 RBI Guillermo García Tigres 95 R Jayson Bass Saltillo 102 H Luis Carlos García Tigres 144 SB Demond Smith Monterrey 53
+ Pitching leaders Stat Player Team Total ERA Dan Serafini Monterrey 1.59 W José Mercedes Saltillo 14 K Bo Magee Campeche 155 IP Edwin Hurtado Cancún / Yucatán 175.0 SV Santos Hernández Tigres 35
Awards Award Player Team Ref. Pitcher of the Year Pablo Ortega Puebla Rookie of the Year Jesús Guzmán Tigres
References