River Plate and Boca Juniors will contest the highly anticipated second leg of the Copa Libertadores final at the Santiago Bernabeu in Madrid. Spoken as the biggest derby in South American football, the Argentinean fixture was twice delayed on Saturday, postponed until Sunday and then called off following an attack by River Plate fans on the Boca team coach and an alleged team bus attack. A meeting in Tuesday in Asuncion, Paraguay, confirmed prospective new dates for the match after fan violence forced its postponement.