Atletico Nacional saw their lead atop the Colombia Primera A cut to four points after being held to a draw on Sunday.
Juan Osorio's men are unbeaten in 10 league games to start the campaign but failed to win for just the second time in a 0-0 draw at home to La Equidad.
They are four points clear of Deportivo Cali and have two games in hand on the second-placed outfit.
Deportivo Cali capitalised on Atletico Nacional's draw, grabbing a 2-0 victory away at Alianza Petrolera. Lucas Scaglia and Nestor Camacho were on the scoresheet as Deportivo Cali put some pressure on the league leaders.
Edison Toloza and Luis Ruiz provided the goals for third-placed Junior in their 2-0 win at Patriotas Boyaca.
Dayro Moreno struck twice in the last six minutes to see Millonarios claim a 2-2 draw at Itagui.
Santa Fe and Medellin played out a 1-1 draw and Once Caldas were unable to find a winner in a 0-0 draw at Cucuta Deportivo.
A 63rd-minute penalty from Luis Paez saw Atletico Huila past Envigado 2-1 and Deportes Quindio recorded a narrow 1-0 win over Deportes Tolima.
In the highest scoring game of the round, Deportivo Pasto held on for a 4-3 win at home to Boyaca Chico.
Juan Mahecha gave the visitors a second-minute lead but they went into the break on level terms after Julian Lalinde equalised.
Jorge Ramirez and Mauricio Mina had Deportivo Pasto 3-1 up before Cristian Alessandrini pulled one back for the travelling side.
Juan Villota restored Deportivo Pasto's two-goal advantage before Jairo Castillo made it a nervous finish.
The hosts held on and Alessandrini was sent off for Boyaca Chico in the final five minutes.