The1971Mexican Leagueseason was the 47th season in the history of theMexican League. The league expanded from 10 to 12 teams, with the expansion teams being thePiratas de Sabinas and theAlijadores de Tampico. The season started on March 16 and ended on August 18 with the last game of theSerie del Rey, where theCharros de Jalisco defeated theSaraperos de Saltillo to win the championship.^[1] The Horsemen became the first team in the Serie del Rey toovercome a 3-0 deficit and the only one until theToros de Tijuana in 2021.^[2]

TheSerie del Rey was played in a best-of-seven series between the North and South Region champions. The Saraperos began by winning the first three games to lead the series. Game four was postponed due to rain and was scheduled for the next day. The Charros won, staying alive by taking the series to game five, played on the same day. The Charros won game five and returned to Guadalajara. There, they won game six and later the decisive game seven, thus reverse sweeping the Saraperos.^[3] It was the only time a team had recovered from a 3–0 deficit in the final series until the2021 season, where theToros de Tijuana recovered from a 3–0 series deficit and beat theLeones de Yucatán.^[4]