Diego “Nightmare” Sanchez (born December 31, 1981 in Albuquerque, New Mexico) is a Mexican American mixed martial artist (MMA) with a background in wrestling and Gaidojutsu, system of submission wrestling developed by his longtime, but now former, trainer Greg Jackson. Sanchez currently fights as a lightweight with the Ultimate Fighting Championship (UFC).

weight class: middleweight
home town: albuquerque, NM
Age: 26
D.O.B.: 12.31.1981
height: 5-10″
weight: 170 lB.
fighting style: gaidojutsu

win Luigi Fioravanti The Ultimate Fighter T Rampage vs T Forrest Finale 6.21.2008
win David Bielkheden UFC® 82 PRIDE OF A CHAMPION 4.1.2008
loss Jon Fitch UFC® 76 KNOCKOUT 9.22.2007
loss Josh Koscheck UFC 69: SHOOTOUT 4.7.2007
win Joe Riggs UFC Fight Night LIVE 12.13.2006
win Karo Parisyan UFC-Fight Night 6 8.17.2006
win John Allesio UFC 60 05.27.2006
win Nick Diaz UFC-Ultiamte Fighter II Finale 11.05.2005
win Brian Gassaway UFC 54-Boiling Point 08.20.2005
win Kenny Florian UFC-Ultimate Fighter Finale 04.09.2005
win Jorge Santiago KOTC 36-Unfinished Business 06.12.2004
win Ray Elbe KOTC 35-Albuquerque 05.15.2004
win Travis Beachler POA-Pride of Albuquerque 04.10.2004
win Cruz Chacon IE-Independent Event 02.28.2004
win Rene Kronvold KOTC 24-Mayhem 06.14.2003
win Mike Guymon KOTC 23-Sin City 05.16.2003
win Jake Short KOTC 21-Invasion 02.21.2003
win Shannon Ritch KOTC 20-Crossroads 02.15.2002
win Jesus Sanchez AC 1-Aztec Challenge 1 09.06.2002
win Michael Johnson ROF 5-Predators 06.21.2002