Tuff-N-Uff returns Jan. 7 with "Las Vegas vs. 10th Planet Riverside" and female tourney Las Vegas has long been known as "The Fight Capital of the World," and now a group of Sin City-based fighters will get a chance to prove it. Las Vegas' premier amateur mixed martial arts organization is proud to announce the promotion's return to the Orleans Hotel & Casino's Mardi Gras Ballroom in Las Vegas on Friday, Jan. 7, with the 15-bout event "Tuff-N-Uff: Las Vegas vs. 10th Planet Riverside." Fighters from top Las Vegas gym such as Xtreme Couture and Striking Unlimited unite to take on a crew from California's 10th Planet Riverside academy. In addition to the six-bout Las Vegas vs. 10th Planet Riverside series, the Jan. 7 event will also feature two quarterfinal matches in Tuff-N-Uff's talent-laden 145-pound tournament, which kicked off this past November. "Las Vegas is home to many of MMA's top training facilities," Tuff-N-Uff president Barry Meyer said. "But as the sport continues to gr