Backlash is an annual professional wrestling pay-per-view event produced by World Wrestling Entertainment, which started in 1999 and is held normally in April (with the exception of 2005). From 2004 to 2006, the event was exclusive to the RAW brand. The 2007 event was the first PPV (other than WrestleMania 23) after WWE stopped doing brand exclusive events. Backlash often features rematches from WrestleMania, or matches based on events that took place at WrestleMania, hence the name.