Football Men: Copa Libertadores 1991 February 20-June 5: Quarterfinals: América Cali (col) - Atlético Nacional (col) * 0-0 0-2 (first leg at Miami, return at San Cristóbal) Cerro Porteño (par) - Olimpia (par) * 1-0 0-3 Colo Colo (chl) * - Nacional (uru) 4-0 0-2 Flamengo (bra) - Boca Juniors (arg) * 2-1 0-3 Semifinals: Atlético Nacional (col) - Olimpia (par) * 0-0 0-1 (first leg at San Cristóbal) Boca Juniors (arg) - Colo Colo (chl) * 1-0 1-3 Finals: Olimpia (par) - Colo Colo (chl) * 0-0 0-3