
Racing Club won the trophy because 10 of their players were sent off.
Racing was leading the game 2-1 when the game was stopped.
If a team has fewer than seven players, the match can't go on.
Carlos Alcaraz celebrated in front of the Boca fans when he won the game in San Luis in the 118th minute.
The Boca players threw the ball at him.
Alcaraz and five Boca players were sent off by the referee, including an unused substitute and a replacement. Jonathan was shown a red card.
Racing's Johan Carbonero and Boca's Sebastian Villa were both shown red cards in the 95th minute and Alan Varela was sent off five minutes later.
Racing and Boca were tied at one point in the first half.
The World Cup will be hosted by Argentina on 20 November.
