The following is a quote from an article on Women's MMA in TIME magazine:
And see a payday. Over the past few years the popularity of mixed martial arts, the full-combat sport that combines elements of boxing, kickboxing, wrestling, jujitsu and other disciplines, has exploded. One card in the Ultimate Fighting Championship (UFC), the most prominent men's MMA organization, whose fights are shown on Spike TV and pay-per-view, drew more television viewers than the baseball playoffs in the all-important 18-to-34-year-old-male demographic. The UFC surpassed HBO's 2006 pay-per-view boxing take and is probably worth more than $1 billion.