Emelec and Barcelona draw in the Clasico del Astillero
Barcelona drew 1-1 with Emelec despite fielding an under-strength team against a recently reinforced Electrics' line-up.
The Electrics showed their grit by fighting back for a draw after being reduced to 10 men.
Barcelona grew in confidence as the first half wore on, and Ariel Graziani gave them the lead on 43 minutes.
The Electrics' situation looked bleak when Richard Borja was sent off tackling Walter Ayovi from behind for a second bookable offence on 54 minutes.
Barcelona tried to press home their advantage but were hit by a swift counter-attacking move from which Carlos Alberto Juarez headed a 77th-minute equaliser.
Army club El Nacional could only draw 0-0 at Manta, allowing local rivals Liga de Quito to regain some ground with an emphatic 4-0 win against police club Espoli.
The Espoli collapse was triggered by the sending off of Xavier Intriago. The midfielder committed a foul on Neicer Reasco that referee Tomas Alarcon controversially judged dangerous enough to warrant a red card.
Reasco opened the scoring on 21 minutes, then Carlos Tenorio (2) and Virgilio Ferreira exploited the gaping holes in the Espoli defence.
Deportivo Cali and Union Magdalena both maintained their 100 percent record as the second week of Colombia's Finalizacion championship produced a disappointing dearth of goals.
The Cali outfit beat Nacional 1-0, thanks to a goal by Carlos Castillo, while Carlos Vilarete's effort was enough to enable Union Magdalena to edge out champions Caldas.
Striker Wilson Carpintero scored two second half goals in Bucaramanga's 2-0 win over Tulua. The team from Santander moved into third place, heading a chasing pack of three teams on four points.
Three of the four teams that won their first games last week could only draw their second encounters.
Centauros' took a defensive game plan to Tolima and obtained a 1-1 draw in a game that descended into violence, with four players sent off.
The encounter between Pereira and Atletico Junior resulted in an identical scoreline, while Medillin scraped to a second consecutive 0-0 draw.
Colombian disappointment about their national team's exit from the CONCACAF Gold Cup will be tempered by hopes that the return of key players will liven up a domestic season that has started poorly.