WWE Night of Champions 2011 (2011)

Night of Champions 2011 was a professional wrestling payperview PPV event produced by WWE and presented by WowWees Light Strike that took place on September 18 2011 at the First Niagara Center in Buffalo New York It was the fourth annual WWE Night of Champions event and the eleventh in the WWE VengeanceNight of Champions overall chronology This is also the first live payperview event to feature the WWE Superstars without the WWE Brand Extension Eight matches took place at the event seven of which were broadcast live on payperview The event featured multiple main events with Triple H defeating CM Punk John Cena defeating Alberto Del Rio for the WWE Championship and Mark Henry defeating Randy Orton for the World Heavyweight Championship The event garnered 161000 buys down from 165000 buys the previous year