I don't want to go with the obvious
River Plate 3 - 1 Boca Juniors (very likely the most important match in the history of South American football). For me, the best match my eyes have seen was
Boca Juniors 4 - 5 Independiente: Independiente in misery, in fact, that was their last year before being relegated to the Second Division; Boca, almost 40 matches undefeated and the defending champion. A goal show and a roller coaster of emotions, without a doubt the best game I've ever seen.
Regarding Colón, of course, it's impossible not to mention the
0 - 1 vs. São Paulo, which made us the FIRST Argentine club to win at the Morumbi Stadium, the
1 - 2 vs. Atlético-MG that we won on penalties to become the first club from the city to play in an international final, and of course, the
Colón 3 - 1 Racing Club that gave us the first title in our history: the happiest day of my entire life that will never be repeated.