UFC 183: This is a Middleweight fight between Anderson "The Spider" Silva (33-6-0, 20KO's) from Curitiba, Brazil taking on the challenge of Nick Diaz (26-9-1, 13KO's) from Stockton, California. This card is being broadcast live from the MGM Grand Ga... (more)rden Arena in Las Vegas, Nevada. The scheduled undercard bouts are as follows: Catchweight (180 lbs): Tyron Woodley vs. Kelvin Gastelum Lightweight: Joe Lauzon vs. Al Iaquinta Middleweight: Thales Leites vs. Tim Boetsch Welterweight: Jordan Mein vs. Thiago Alves