hosting the continental tournament in Mexico (a member of the CONCACAF federation) and board members Brazil and Chile discussed the possibility of exchanging the 2015 and 2019 tournaments, it was decided and confirmed by the CBF in February 2011 that the 2015 Copa América would remain in Brazil. However, in March 2012, CBF president Ricardo Teixeira resigned from his position and the CBF agreed to swap the tournament's hosting with Chile. The swap was made official in May 2012. The centennial edition of the tournament, Copa América Centenario, took place in June 2016, and was held in the United States. The Copa América Centenario marked the first time the tournament was hosted by a non-CONMEBOL nation. Each Copa América since 2005 has had its own mascot. Gardelito, the mascot for the 1987 competition, was the first Copa América mascot. C = non-CONMEBOL host. Format and rules In most tournaments, the tournament consists of a round-robin stage or a round-robin group stage followed by a single-elimination knockout stage. The tournament was previously known as Campeonato Sudamericano de Futbol (South American Championship of Football). South American Championship of Nations was the official English language name. The current name has been used since 1975. Up to 1967 if there was a tie of points at the top of the standings, a playoff match (or matches) would be held to determine the champion. Between 1975 and 1983 it had no fixed host nation, and was held in a home and away fashion. The current final tournament features 12 national teams competing over a month in the host nation. There are two phases: the group stage followed by the knockout stage. In the group stage, teams compete within three groups of four teams each. Three teams are seeded, including the hosts, with the other seeded teams selected using a formula based on the FIFA World Rankings. The other teams are assigned to different "pots", usually based also on the FIFA Rankings, and teams in each pot are drawn at random to the three groups. Each group plays a round-robin tournament, in which each team is scheduled for three matches against other teams in the same group. The last round of matches of each group is not scheduled at the same time unlike many tournaments around the world. The top two teams from each group advance to the knockout stage as well as the two best