Rondon latched onto Pablo Solari’s inviting cross from the right wing with an unstoppable 94th-minute header from the edge of the six-yard box, reports Xinhua.
It was no less than the hosts deserved after they controlled 77% of the total possession and had 25 shots on goal compared to five attempts by their opponents.
The result leaves River third in Group A with nine points from five outings while Atletico are 10th, three points further back.
In other Argentine Primera Division fixtures on Thursday, Belgrano won 3-0 at home to Platense, Union were held to a 0-0 home draw by Godoy Cruz and Argentinos Juniors eased to a 3-1 home victory over Talleres Cordoba.
–IANS
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