Newell's Old Boys saw their slim title hopes effectively ended as they lost 2-1 at San Martin San Juan in their penultimate Clausura game of the season.
Diego Garcia put San Martin ahead within a minute of kick-off, before Gaston Caprari doubled the advantage in the 26th minute. Pablo Perez pulled one back five minutes later, but any hopes of a comeback were effectively ended when Santiago Vergini saw red nine minutes from time.
Although they remain just two points off the top, with the three teams above them having played a game less it would take a miracle for Newell's to finish top. The day's other game, between Lanus and Union Santa Fe, finished goalless.
