An Elimination Chamber match is a match which takes place in a large, circular steel cage that surrounds the entire ring. The chamber contains four clear, plexiglass pods which holds four of the six wrestlers in the match. A pod opens every five minutes to let another wrestler into the match. A wrestler can be eliminated from the match by either pinfall or submission inside the ring. The last wrestler remaining is the winner. The match was created by Triple H and was introduced by Eric Bischoff in November 2002.