RIO DE JANEIRO, May 8 (Reuters) - Seventeen-year-old Rodrigo Tapia scored after 30 seconds of his professional debut as Colo Colo beat Cobreloa 2-0 in Chile at the weekend.
Nacional lost their unbeaten record in Uruguay while LDU and El Nacional stayed neck and neck at the top of the Ecuadorean championship after sharing the spoils in a 2-2 draw.
CHILE - Tapia made a dream debut after replacing Humberto Suazo in the 80th minute of Colo Colo's match against Cobreloa. With his first touch of the ball, the teenager controlled Jorge Valdivia's cross and coolly placed the ball past Carlos Ortega.
Gonzalo Fiero had given Colo Colo the lead in the first half with a long-range shot while Cobreloa had defender Luis Fuentes sent off for a second bookable offence in the 57th minute.
The win took Colo Colo back to the top of Group C in the Apertura championship with 25 points from 12 games.
Audax Italiano, Universidad de Chile and Huachipato lead the other groups.
URUGUAY - Nacional's eight-match unbeaten run ended with a shock 2-0 home defeat by Deportivo Colonia.
Gaston Lopez gave the visitors a first-half lead from a free kick and Aldo Diaz finished off a counter-attack to score the second with 16 minutes left. Nacional had Jorge Bava sent off in the 88th minute.
Defensor Sporting, the only unbeaten side remaining, beat Tacuarembo 1-0 with a 75th minute goal from Maximiliano Pereira to go top on goal difference. Both teams have 22 points.
Penarol, who had 12 points deducted after a group of their supporters stabbed a rival fan to death outside the Centenario stadium in March, stayed bottom with minus four points after being held 1-1 at home by Rentistas.
Teenager Maxi Arias volleyed Penarol ahead after 18 minutes but just as they were about to celebrate their first win for two months Hector Acuna popped up to equalise in the 90th minute.
ECUADOR - Army club El Nacional and LDU, who form the backbone of Ecuador's World Cup team, drew 2-2 to stay level on points at the top of the Apertura championship.
El Nacional went ahead with a Pedro Quinonez free kick in the 13th minute but LDU hit back almost immediately as Edison Mendez and Agustin Delgado scored twice in three minutes.
Midfielder Wellington Sanchez headed the equaliser in the 67th minute. Both sides have 30 points, although El Nacional lead on goal difference.
Barcelona, playing in Machala after their fans rioted and forced last week's derby away to Emelec to be called off in the second half, beat third-placed Olmedo 1-0.
Macara, who had lost their last six games, won 2-0 at Deportivo Quito.
COLOMBIA - Leading scorer Jorge Diaz grabbed his 14th goal of the Apertura championship as surprise package Cucuta beat Santa Fe 2-0 to stay top.
Diaz latched on to McNelly Torres's through ball, outpaced his marker and scored with a powerful right-foot shot to complete Cucuta's win after Lin Carlo Henry had given them the lead from a rebound.
Cucuta, promoted from the second division last year and led by former Costa Rica coach Jorge Luis Pinto, have 32 points from 15 games.
They are one ahead of Once Caldas, who drew 0-0 at Atletico Junior to keep intact the competition's only unbeaten record.
PARAGUAY - Cerro Porteno and Tacuary stayed level on points at the top of the championship's first stage after both winning at home.
Walter Fretes scored both goals in the first half as Cerro, champions for the last two seasons, beat bottom-of-the-table Fernando de la Mora 2-1.
Tacuary, playing in front of only 180 paying fans, beat 2 de Mayo 3-1 at the Roberto Bettega stadium with goals from Patrocino Samudio, Gregor Aguayo and Carlos Leite.
Edison Gimenez replied for the visitors from a penalty.
The visitors had Pedro Sosa harshly sent off by Paraguay's World Cup referee Carlos Amarilla.
BOLIVIA - Two players were sent off in the first 12 minutes as leaders Bolivar beat Wilstermann 2-1.
Bolivar's Carmelo Angulo was dismissed in the fifth minute for kicking the ball at an opponent after the whistle had gone and Wilstermann's Hugo Rojas followed for an ugly tackle seven minutes later.
Aldo Mores gave Bolivar the lead in the 13th minute when he deflected Limberg Gutierrez's free kick into the goal and Gutierrez added the second himself six minutes before halftime as he scored from close range.
Edgar Olivares reduced the arrears for the Aviators in injury-time.
The win kept Bolivar six points ahead of Real Potosi and Universitario de Sucre in the Clausura championship.
Real Potosi beat The Strongest 2-1 at 4,100 metres above sea level and Universitario beat Oriente Petrolero 3-2.