The Season 2 World Championship was held in early October of 2012 in Los Angeles, California to conclude the $5 million USD season. Twelve qualifying teams from around the world participated in the championship, which boasted the largest prize pool in the history of e-sports tournaments at $2 million USD. The grand finals took place on October 13th at the Galen Center on the campus of the University of Southern California, while all group stage, quarterfinal, and semifinal matches took place the week before, between October 4th and 6th. The matches were cast by Deman, Phreak, Jatt, and Rivington while the event being hosted by veteran hosts Marcus "djWHEAT" Graham and Rachel "Seltzer" Quirico. 8.2 million viewers tuned in to the World Championship broadcast, with a maximum of 1.1 million concurrent viewers, making the Season 2 World Championship the most watched eSports event in history at the time. This record has since only been surpassed by the Season 3 World Championship.
Full picks and bans of the match can be found here
During the last quarterfinal match on October 6th between CLG EU and Team WE, multiple technical difficulties occurred. Roughly twenty minutes into the second game, all ten players suddenly disconnected from the game, forcing a remake. Then, roughly sixty minutes into the third game, all ten players were again disconnected. A final attempt was made at finishing the third game, but due to more disconnects the last game and the following semifinals were rescheduled for October 10th. The cause of the connection issues is uncertain, but is suspected to have been caused by faulty hardware.
During the World Championship Playoffs, five matches were found to have rule violations that required investigation. The five incidents all involved players looking away from their monitors and are as follows:
In the cases of Weixiao, Zz1tai, Dyrus, and Stanley, it was determined that the players gained no advantage and the first three players were issued warnings for unsportsmanlike conduct; Stanley was not given a warning since it was determined that he was adjusting to monitor glare. In the case of Woong, it was determined that his actions had an impact on the game, although not the overall outcome of the Azubu Frost vs. Team SoloMid match. Azubu Frost was issued a fine of $30,000 USD. More detailed information on each case can be found on Riot's official forum.