BUENOS AIRES - Velez Sarsfield completed a miserable week for Boca Juniors by handing them a 2-0 defeat in the Argentine championship on Sunday. Velez scored twice in as many minutes against a Boca team still reeling from their shock Libertadores Cup elimination at home to Uruguayan outsiders Defensor Sporting on Thursday. Hernan Lopez put Velez ahead in the 59th minute, pouncing for his ninth goal of the championship after Julio Cesar Caceres was slow to react to a ball headed into the Boca area. One minute later, Jonathan Cristaldo took advantage of more slack defending by Boca to sidefoot the second past Roberto Abbondanzieri. Boca had defender Juan Forlin sent off for a second bookable offence late in the game. Both the players and coach Carlos Ischia, widely expected to lose his job, refused to talk to the media. The result kept Velez second in the Clausura championship, one point behind Lanus who won 1-0 at Banfield on Saturday. Both teams have three matches to play. Boca, the country's most popular club, are languishing in 17th place after their seventh defeat in 15 league outings. River Plate and Independiente, two more of Argentina's big five, went into their derby at the Monumental stadium after both suffering four-goal defeats last week. River redeemed themselves with a 2-0 win as both teams missed a penalty. Diego Barrado put River ahead with a superb goal in the 29th minute, running from midfield before firing a 25-metre shot past Fabian Assmann. Barrado also set up the second nine minutes later, providing the cross for Radamel Falcao Garcia to head the second. Garcia missed a penalty in the 59th minute, firing over the bar, and Independiente's Daniel Montenegro had another penalty stopped by River goalkeeper Daniel Verga two minutes later.