RIO DE JANEIRO, Sept 20 (Reuters) - Chilean champions Colo Colo scraped into the last sixteen of the Copa Sudamericana by beating Peruvian provincial club Coronel Bolognesi 1-0 to win their first-round tie on away goals.
Unrated Bolognesi had produced a shock 2-1 win in last week's first leg and clung on grimly to their lead in the first half of Tuesday night's game in Santiago.
However, after surviving near missies by Jose Luis Jerez, Humberto Suazo and Miguel Caneo, Bolognesi were finally undone in first-half injury time when defender Arturo Vidal rose to head the only goal following a corner.
Colo Colo will face Costa Rica's Alajuelense in the second round of the competition, the region's equivalent of the UEFA Cup.
Uruguay's Nacional set up a clash with defending champions Boca Juniors after beating Libertad 2-1 in the night's other tie played in Montevideo.
Nacional, already leading the Paraguayan team 2-1 from the first leg in Asuncion, went ahead through Panamanian striker Jose Luis Garces in the 35th minute.
Paraguay midfielder Carlos Bonet headed Libertad level in the 64th minute after being unmarked but Nacional regained the lead five minutes from time when Rodrigo Castro scored with a powerful left-foot shot.