7. UFC 100
Headlined by the heavyweight unification showdown between champion Brock Lesnar and interim titleholder Frank Mir, UFC 100 on July 11, 2009 was a historic success. At the time, Lesnar was the most recognizable star the Ultimate Fighting Championship had on its roster, and it was riding his nasty attitude and larger-than-life persona to the max. Lesnar pummeled Mir en route to a second-round technical knockout and then launched into his infamous post-fight tirade in which he trashed Mir, taunted the UFC’s primary sponsor and revealed plans to go back and have sexual relations with his wife.
UFC 100 remains the standard by which all other MMA pay-per-views are measured, with more than 1.6 million buys.
Number 6 » Department of Rules & Regulations