Gabriel Hauche scored and was later sent off as Racing Club drew 1-1 away at Lanus in the Argentinian Apertura.
The point kept Racing Club unbeaten through four games but was not enough to topple Boca Juniors at the top of the table, with Racing Club, Quilmes and Newell's Old Boys all one point off the early pace.
Lanus went ahead with a penalty from Gonzalo Castillejos in the 45th minute, and Hauche drilled a low shot under goalkeeper Agustin Marchesin for a leveller after 67 minutes. He was dismissed with a minute to go but it did not allow Lanus to find a winner.
Quilmes were held 1-1 at Atletico Rafaela thanks to a last-minute equaliser from Facundo Diz. Rafaela's Ivan Juarez barged his way through for the opening goal in the 37th minute, and both sides had a player sent off during the second half, with the hosts losing Cristian Vella and Quilmes having Joel Carli dismissed.
It seemed Rafaela would hold on, but in the third minute of stoppage time Diz sent a sidefooted shot under goalkeeper Guillermo Sara who got his body to the ball but could not stop it trickling over the line.
Newell's Old Boys were held to a goalless draw away to Belgrano Cordoba, while River Plate and San Lorenzo also played out a stalemate.
Velez Sarsfield earned a 3-0 win away to San Martin San Juan, who remain without a point, thanks to goals from Gino Peruzzi, Francisco Cerro and Federico Insua.