Del Rio invoked his rematch clause after losing the championship to Cena at Night of Champions 2011 .
WWE COO Triple H created this historic contest because Punk never received a rematch against del Rio after SummerSlam 2011 .
Del Rio invoked Triple H 's rematch clause after losing the championship to Cena at Night of Champions 2011 .
WWE COO Triple H created this historic contest because Punk never received a rematch against del Rio after SummerSlam 2011 .