The Dynamite Duumvirate Tag Team Title Tournament (DDT4) was an annual professional wrestling tag team tournament produced by Pro Wrestling Guerrilla (PWG) between 2007 and 2015. The inaugural tournament was contested for the vacant PWG World Tag Team Championship. Reigning champions entered the tournament and defended the title in each round of the tournament for five editions (2008, 2009, 2010, 2013 and 2015) while three editions (2011, 2012 and 2014) of the tournament were used to determine the number one contenders to the champions. Winners, dates, venues and main events Championship match for winner – Championship victory – Championship match loss The inaugural DDT4 tournament in 2007 was contested for the vacant PWG World Tag Team Championship while the titles were defended in the 2008, 2009, 2010, 2013 and 2015 editions of the tournament. Results DDT4 (2007) The first ever DDT4 was held on May 19 and 20, 2007, in Burbank, California for the vacated PWG World Tag Team Championship. Participants Arrogance (Chris Bosh and Scott Lost) The Briscoe Brothers (Jay Briscoe and Mark Briscoe) Davey Richards and Super Dragon The Havana Pitbulls (Ricky Reyes and Rocky Romero) The Kings of Wrestling (Chris Hero and Claudio Castagnoli) Muscle Outlaw'z (Masato Yoshino and Naruki Doi) Pac and Roderick Strong The Trailer Park Boyz (Josh Raymond and Nate Webb) DDT4 (2008) The second DDT4 was held on May 17 and 18, 2008, in Burbank, California, with Kevin Steen and El Generico entering the tournament as the reigning and defending champions. Kota Ibushi was scheduled to take part in the tournament, but was forced to back out after suffering a broken ankle. He was replaced by fellow Dramatic Dream Team wrestler El Blazer. Participants 2.0 (Jagged and Shane Matthews) Davey Richards and Super Dragon PWG World Tag Team Champions El Generico and Kevin Steen The Dynasty (Joey Ryan and Scott Lost) Generation Next (Jack Evans and Roderick Strong) Los Luchas (Phoenix Star and Zokre) Mini Crazy MAX (El Blazer and Kagetora) Ronin and Scorpio Sky DDT4 (2009) The third DDT4 was held on May 22, 2009, in Reseda, California, with The Young Bucks (Matt Jackson and Nick Jackson) entering the tournament as the reigning and defending champions. Originally the teams of The Hybrid Dolphins (Bryan Danielson and Paul London), Chris Hero and Roderick Strong and Los Luchas (Phoenix Star and Zokre) were announced for the tournament, however, Los Luchas were replaced at the