There are a few WWE match types that involves several sides. A match with three Superstars involved is called a Triple Threat Match. A match with four Superstars involved is called a Fatal Four Way Match.
In Fatal Four Way Matches, four Superstars compete in one ring at the same time. Very often, matches are of an elimination style, meaning, the last man scoring a decision being declared the winner. In other cases, a Fatal Four Way Match ends with the first Superstar to score a decision picking up the win.

On June 20, 2010, WWE presents the next Fatal Four Way Match:

SmackDown: Jack Swagger vs. Rey Mysterio vs. CM Punk vs. Big Show
RAW: John Cena vs. Edge vs. Sheamus vs. Randy Orton

Watch the 2010 Fatal Four Way Match live online, see broadcasters below.
Please note: livestream might not be available in call countries. Check with broadcasters.