The first leg, played in Asunción, saw Olimpia shoot ahead 2–0 on goals by Rafael Bobadilla and Vidal Sanabria. Nacional answered in the second leg (played in Bogotá on the grounds that the Estadio Atanasio Girardot in Medellín was too small) with a 2–0 win of their own. An own goal from Fider Miño got one, and Albeiro Usuriaga provided the other. The tie went into penalty kicks, where Nacional won 5–4, giving the club its first Copa Libertadores title, while becoming the first Colombian club to win the competition as well. On 17 December, Nacional played the 1989 Intercontinental Cup against Milan, champion of the 1988–89 European Cup. The result was a 1–0 defeat with a 119-minute free kick goal from Alberigo Evani. As champion of the Copa Libertadores, Nacional also played the 1989 Copa Interamericana against Pumas UNAM, winner of the 1989 CONCACAF Champions' Cup. The cup was played in 1990 in two legs, with Nacional winning it with an aggregate score of 6–1. They also played the 1990 Recopa Sudamericana against Boca Juniors, champion of the 1989 Supercopa Libertadores (that they also played), which finished in a 1–0 defeat. The involvement of Pablo Escobar in the club remained strong. Some referees were threatened in the league and even in the Copa Libertadores, for which CONMEBOL banned Colombian clubs from the 1990 Copa Libertadores, with the exception of Nacional who was admitted as champion of the previous edition. However, the team had to play its home matches in Chile. Juan Daniel Cardellino, an Uruguayan referee, confessed to receiving death threats and $20,000 during the 1990 Copa Libertadores match between Nacional and Vasco da Gama. Nacional had won the match 2–0, but the result was annulled. A replay was ordered to be played in Santiago, and Nacional won 1–0. However, all Colombian clubs were banned from playing at their home venues for the 1991 Copa Libertadores. In 1989, the domestic league season was cancelled due to the assassination of referee Álvaro Ortega on 1 October after a match between Independiente Medellin and America de Cali. Escobar did not murder the ref, but it is believed that one of Escobar's hitmen did. In October, the team played the Supercopa Libertadores and were eliminated in the quarterfinals by Independiente. Nacional was banned from playing the Supercopa Libertadores in 1990 and 1991 due to the incidents in the match against Vasco da