Nestor Bareiro headed a stoppage-time winner as 10-man Olimpo de Bahia Blanca beat Huracan 2-1 on Saturday to move into third place in the Argentine Clausura standings.
Roberto Brum was sent off in the 37th minute for Olimpo before Diego Galvan put the visitors ahead in the 49th, scoring through the legs of goalkeeper Gaston Monzon.
Javier Campora met Gaston Machin's low cross at the near post to get the equalizer for Huracan two minutes later, but Bareiro scored on a header off Facundo Castillon's cross in the 92nd minute to allow Olimpo to take all three points.
Velez Sarsfield, which plays Banfield on Monday, remains atop the standings with 24 points, with Godoy Cruz in second with 23, and Olimpo and River Plate in third with 22. River hosts All Boys on Sunday.
Also Saturday, Quilmes drew 2-2 with Gimnasia, Tigre beat Colon 3-0 and Racing Club won 2-1 at Arsenal.
Pablo Vazquez gave Quilmes the lead at home in the 3rd minute, but Lucas Castro and Claudio Graf scored either side of halftime as Gimnasia rallied under new coach Dario Ortiz.
Enzo Kalinski got the equalizer in the 79th minute to salvage the draw, which won't help either side avoid relegation.
Quilmes stayed at the bottom of the table of average points used to decide relegation, while Gimnasia is second from the bottom. The two teams with the worst averages in the division are automatically relegated.
Elsewhere, Diego Morales struck in the 34th and 61st minutes and Denis Stracqualursi also scored as Tigre strolled past Colon de Santa Fe.
Valentin Viola put Racing ahead of Arsenal in the 81st minute and Patricio Toranzo followed with a second goal a minute later. Matias Alustiza pulled a goal back for Arsenal in the 84th, but Racing held on for the win.
On Friday, Godoy Cruz downed Newell's Old Boys 3-1.
