Elimination Chamber matches are a speciality match involving six competitors, in which two competitors start in the ring and the other four are sequestered into a chamber. The ring is surrounded by steel chains and metal walls to prevent outside interference (or at least, minimize it). The four additional competitors enter the match at five- or three-minute intervals. Eliminations occur by pinfall or submission, and the winner of the match is the last man standing.
According to WWE storylines, the original idea of the match was conceived by Eric Bischoff, looking to put a modern twist on NWA's popular War Games. In 2008, WWE started hosting two Elimination Chamber matches at the No Way Out pay-per-view in February as a stop on the Road to WrestleMania for a shot at the championships at the event or for the championship itself. In 2010, the name of the February pay-per-view became "Elimination Chamber."
The first Elimination Chamber was in November 2002 at Survivor Series in Madison Square Garden. Triple H entered as the defending World champion, and he & Rob Van Dam were the first two competitors. Kane, Booker T, Chris Jericho, and Shawn Michaels were the other competitors, and the final two men were HHH and HBK. Shawn Michaels pinned Hunter to win the World Heavyweight championship.
The second Elimination Chamber was in August 2003 at SummerSlam in Phoenix, Arizona. Once again, Triple H entered as the defending World champion. Shawn Michaels and Chris Jericho were the first two competitors. Kevin Nash, Randy Orton, HHH, and Goldberg were the other competitors, and the final two men were HHH and Goldberg. Goldberg defeated Orton, Jericho, and HBK in succession before Hunter pinned him after Ric Flair slid the sledgehammer into the ring.
The next Elimination Chamber was in January 2005 at New Year's Revolution in San Juan, Puerto Rico. The vacant World championship was up for grabs. Chris Jericho and Chris Benoit were the first two competitors. HHH, Edge, Randy Orton, and Batista were the other competitors, and the final two men were HHH and Orton. HHH pinned Orton to regain the championship, only after ensuring Orton eliminated Batista first.
The next Elimination Chamber was in January 2006 at New Year's Revolution in Albany, New York. John Cena entered as the defending WWE Champion. He and Shawn Michaels were the first two competitors. Carlito, Kurt Angle, Chris Masters, and Kane were the other competitors, and the final three men were Cena, Carlito, and Masters. Carlito swerved Masters and pinned him, but then Cena cradled Carlito to win the match. However, immediately after the match, Edge cashed in his Money In The Bank briefcase to win the WWE Championship.
Next was the first ever Extreme Elimination Chamber in December 2006 at ECW December to Dismember in Augusta, GA. Big Show entered as the defending ECW Champion. Rob Van Dam and Hardcore Holly were the first two competitors. CM Punk, Test, Bobby Lashley, and Big Show were the other competitors, and the final two men were Lashley and Big Show. Lashley pinned Big Show to win the championship.
In February 2009, Edge won Red Chamber (as a surprise entrant) for the World Heavyweight championship and HHH won Blue Chamber for the WWE Championship.
In February 2010, John Cena won Red Chamber for the WWE Championship (only to lose the title to Batista immediately after the match) and Chris Jericho won Blue Chamber for the World Heavyweight championship.