Sergio Batista's side rode their luck to another shock draw, as their opponents squandered two glorious chances to take all three points against the host nation
Indecision and attacking impotence once more characterised Argentina in their second Group B clash, as they were fortunate to stagger to a 0-0 draw against a Colombia side who were made to rue missed chances.
Adrian Ramos and Dayro Moreno both should have hit the net in the first half, but squandered golden opportunities to allow the tournament hosts to salvage a point.
After a frenzied build-up to the game in the packed home of Colon, Argentina and Colombia proceeded to play an entertaining first half marked by errors and missed chances. There were also some beautifully flowing passages of play, as both teams had opportunities to open the scoring.
The Colombians started nervously, and soon found themselves on the back-foot against an Argentine attack with a point to prove. Ever Banega was the first to threaten the Colombia goal, his free kick sending Luis Martinez scrambling to tip behind. New Tijuana recruit Dayro Moreno was the most dangerous player on the away team early on, working well down both flanks in conjunction with deep-lying Radamel Falcao.
After a tense beginning, Hernan Gomez's side began to look more comfortable, and should have taken the lead after 19 minutes. Dayro's cross caught the Argentine defence napping and Adrian Ramos was left free in the box, but his first-time effort was skied over the cross-bar.
If Argentina were lucky after that scare, they were positively blessed not to fall behind on the half-hour. A horrible mistake by Gabriel Milito let in Ramos, and a clear penalty followed when Nicolas Burdisso chopped down the winger clear on goal. Referee Favio Fagundes correctly played advantage, however, and with an open goal Dayro somehow sliced his shot wide of the post.
Sergio Batista's men also went close. Carlos Tevez shot over after receiving a kind bounce in the area, while Ezequiel Lavezzi was released clean through by Lionel Messi only to find Martinez's legs. It was Colombia who went into the break the happier team after an impressive 45 minutes, while Messi and Co. left to the sound of fans' whistles ringing in their ears.
Neither side made a change at the break, and the game resumed at the same frenetic pace. Tevez thought that he had earned a spot-kick in the opening minutes of the restart with a decent shout for handball which was rejected by the referee, while Falcao stormed past three markers before being cut down. Argentina thought they had taken the lead through Lavezzi, but the linesman's flag was already up when the Napoli man headed agonisingly against the post.
The 14-time Copa champions showed plenty of attacking intent, but too often lacked the final ball against a well-organised Colombian defence which did not give them an inch. Colombia in turn withdrew into their own half, relying on smash-and-grab raids from Falcao, Ramos and Moreno moving the ball quickly forward. The biggest cheer of the evening thus far was reserved for Sergio Aguero, who entered for the again-disappointing Lavezzi with 60 minutes on the clock.
Fernando Gago was also introduced, and the Real Madrid man immediately injected some urgency into a pedestrian Argentine midfield. A raking pass found Tevez in the box, and his shot flashed just over in a warning to the away team. Pablo Armero was the next to threaten, released perfectly by Falcao his shot from the left whistled inches past the post, to the relief of the hosts. The Porto man himself was the next to break free, and Sergio Romero did excellently to palm away a bomb from the No.9.
With 20 minutes left Batista went for broke, withdrawing Banega in favour of Gonzalo Higuain. The Real Madrid striker forced a save out of Martinez, but again David Ospina's replacement was more than up to the task. A sturdy Colombian back line held firm though, threatening late through substitute Teo Gutierrez, and hanging on in the final minutes a 0-0 draw was the best Argentina could hope for from an intensely mediocre performance.
The draw means Colombia stay top of Group B with four points and Argentina move to second, with Bolivia and Costa Rica set to complete the second round of matches on Thursday.