BUENOS AIRES, Argentina (AP) – Newell's Old Boys lost 2-1 to archrival Rosario Central - one of Argentina's most intense derby matches - but still kept the lead in Argentina's first division.
Hernan Encina scored the winner in the 28th, firing just inside the post from close range.
Alejandro Donatti opened the scoring for Central with a header in the 11th and Maxi Rodriguez equalized four minutes later.
Newell's has 26 points after 12 rounds, three clear of San Lorenzo and Arsenal.
In other Sunday matches, Tigre had a 2-1 comeback win over Arsenal with Cristian Bordacahar scoring the clincher in the 77th. Milton Caraglio put Arsenal ahead in the 65th and Matias Perez Garcia equalized in the 75th.
Boca Juniors forced a 2-2 draw in a heated clash against Godoy Cruz with an injury-time penalty by Claudio Perez to hold onto fourth spot in the standings, while River Plate and Belgrano drew 0-0.
Boca took the lead in the 31st minute via Emmanuel Gigliotti's neat goal but Godoy equalized seven minutes later when Gonzalo Castellani's cross was turned in by Jose Luis Fernandez.
Federico Lertora's effort from outside the area in the second half hit both posts but Mauro Ivan Obolo was on hand to turn the ball into the net to give Godoy a 2-1 buffer, which they held until the third minute of stoppage time when David Achucarro brought down Juan Manuel Martinez in the area.
At the final whistle both teams converged on each other as tempers flared.