Lethal Lottery-style Tag Tournament just recently did very well in TNA.
It created both the current World Tag Champs and the current KO Tag Champs in the same random-pairing tournament!
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Thank you, Eddie Guerrero.
http://www.wwe.com/f/styles/photo_large/public/photo/image/2012/04/33_Moscow_04112012jg_02128.jpg