Date January 11, 2010
Patriot Center
Fairfax, Virginia
UFC Fight Night: Maynard vs. Diaz, also referred to as UFC Fight Night 20, is an upcoming mixed martial arts event to be held by the Ultimate Fighting Championship (UFC) on January 11, 2010 at the Patriot Center in Fairfax, Virginia.
Main Card
* Lightweight bout: Gray Maynard vs. Nate Diaz
* Lightweight bout: Escudero vs. Evan Dunham
* Middleweight bout: Tom Lawlor vs. Aaron Simpson
* Welterweight bout: Amir Sadollah vs. Brad Blackburn
Preliminary Card
* Middleweight bout: Chris Leben vs. Jay Silva
* Welterweight bout: Rick Story vs. Jesse Lennox
* Lightweight bout: Thiago Tavares vs. Nik Lentz
* Welterweight bout: Mike Guymon vs. Rory MacDonald
* Lightweight bout: Kyle Bradley vs. Rafael dos Anjos
* Middleweight bout: Gerald Harris vs. Mike Massenzio
* Middleweight bout: Nick Catone vs. Jesse Forbes
