Although it may seem odd, Xbox has presented not just one, but four major tournaments for the Call of Duty scene. They weren't just any "major tournaments' either, they were the four largest prize pools ever seen by the Call of Duty community.
|Start||End||Tournament||Location||Total Teams||Prize Pool||Winner||Runner-Up|
|2015-03-27||2015-03-29||Call of Duty Championship 2015||Los Angeles||32||$1,000,000||Denial Esports||Revenge|
|2014-03-28||2014-03-30||Call of Duty Championship 2014||Los Angeles||32||$1,000,000||compLexity Gaming||Team Envy|
|2013-04-05||2013-04-07||Call of Duty Championship 2013||Los Angeles||32||$1,000,000||Fariko Impact||Team Envy|
|2011-09-02||2011-09-03||Call of Duty XP 2011||Los Angeles||32||$1,000,000||OpTic Gaming||Til Infinity|