Marcos Rojo was sent off late in Boca Juniors' Superclásico win over River Plate on Sunday for a high-studded tackle which hit an opposition player in the head.
The former Manchester United defender was immediately shown a red card after inadvertently kicking an attacker's head in their 1-0 win during the hotly contested Buenos Aires derby.
With 30 seconds of stoppage time to play, Roja was going for a 50-50 ball in mid-air when the bottom of his boot made contact with Uruguayan midfielder Nicolas De la Cruz, who was rushing in to try and head the ball.