The 2012–13 Copa Argentina was the fourth edition of the Copa Argentina, and the second since the relaunch of the tournament in 2011. The competition began on October 23, 2012. The tournament featured 224 clubs from the top four levels of the Argentine football league system. The winner (Arsenal) qualified for the 2014 Copa Libertadores and the 2013 Supercopa Argentina.

Two hundred and twenty-four teams took part in this competition including: All the teams from the Primera División (20), Primera B Nacional (20), Primera B Metropolitana (21), Torneo Argentino A (25), Primera C (20), Torneo Argentino B (100), and Primera D (18).

v San Jorge (SF)

The tournament was competed in two phases organized in multiple single-elimination rounds.

The first phase consisted of four rounds divided between Metropolitan and Interior zones. The first round involved the 100 teams from the Torneo Argentino B in a single elimination round. The second round was played by the 50 winners from the first round along with the 18 teams of the Primera D Metropolitana and the 7 lowest teams plus the most recently promoted team of the Primera C Metropolitana. The third round had the 13 winners of the Metropolitan zones from the last round plus the 12 remaining teams from the Primera C Metropolitana and the 21 teams of the Primera B Metropolitana, producing 23 teams. This round also saw the 25 winners of the Interior zones against the 25 teams of the Torneo Argentina A, producing 25 teams. The final round of the first phase saw 48 winners of the previous round (23 from the Metropolitan zone and 25 from the Interior zone) in a single elimination producing 24 teams that enter the second phase.

The Second Phase began with a classification round where the 16 non-champion teams of the B Nacional determined the 8 teams to move forward. The next round saw the 24 teams from the first phase, the 8 winners of the previous round, the remaining champion teams of the Primera B Nacional (Huracán, Ferro Carril Oeste, Rosario Central, and Banfield), and the 12 non-champion teams from the Primera Division in four brackets. The 8 champion teams (River Plate, Boca Juniors, Independiente, Vélez Sársfield, Racing, San Lorenzo, Estudiantes (LP), and Newell's Old Boys) joined the bracket with 24 winning teams.

...
Wikipedia