At the culmination of 18 matchdays, just three points separated third-placed Atletico Nacional from 10th place Patriotas Boyaca - the latter missing out on the finals after a 2-0 loss to the former.
Both sides were level on 26 points heading into the fixture, with a plethora of permeations coming from the fixtures played synonymously on Sunday.
Jefferson Cuero's late goal gave Santa Fe a 1-0 win at home to Junior, taking them top of the table - and booking their two-legged knockout final with Atletico Huila.
Huila were beneficiaries of Boyaca's loss, as they were also defeated - 1-0 by Uniautonoma - but knew their fate in the finals was sealed given other results.
Yimmi Chara scored the game's only goals as Tolima beat Millonarios 1-0 - and claimed the seventh seeding after three wins in their past four.
Aguilas Pereira also won three of their past four - including Sunday's 2-1 come-from-behind win at Once Caldas - to move fourth and book a quarter-final against the same opposition.
