Historical records from the Peruvian Football Federation (FPF) indicate that, in the early 20th century, when Peruvians and Englishmen played football matches in Callao (Peru's chief seaport), the locals wore red shirts to distinguish themselves from the foreigners. During leisure, British civilian workers and sailors played the sport among themselves and with locals in Callao and other commercial zones throughout South America. In 1924, the FPF also equipped with red sweaters and white shorts the team representing it in a match against the team representing the Uruguayan Football Association—although neither side claimed the teams as their official national squads, sports historian Jaime Pulgar-Vidal Otálora argues that the local spectators understood the Peruvian side, composed of players from Callao and Lima (Peru's capital), to represent their national football team. The FPF intended to present this squad as Peru's official national team at the 1924 South American Championship, which was held in Montevideo to celebrate the Uruguayan national football team's victory at the 1924 Summer Olympics, but internal disputes and economic troubles impeded the Peruvians from traveling to Uruguay for the tournament.