On 12 April 1891, Argentina's inaugural Primera División season kicked off with a pair of matches involving four of the new league's five teams.
Founded earlier that year by Alex Lamont of Saint Andrew's Scots School in Buenos Aires, the new league was the first one outside the British Isles. In addition to Saint Andrew's, it included Old Caledonians, Buenos Aires and Rosario Railway, Belgrano FC, and Buenos Aires FC.
On that first matchday, Saint Andrew's beat Buenos Aires 2-5, while Old Caledonians crushed Belgrano 6-0. The two winning teams continued to do well over the course of the season with identical records of six wins, one draw, and a loss. That put them both into a playoff to decide the title, which Saint Andrew's won 3-1.