Submission Underground 28 took place Sunday, October 31, 2021 with 10 fights in Portland, Oregon.
Andy Varela
Self
Haisam Rida
Aaron Tiegs
Guilherme Vasconcelos
Cris Lencioni
Kevin Lee
Juliana Miller
Tara LaRosa
Kyle Chambers
Tanner Weisgram
Matt Ferraiolo
Mikey Gonzalez
Never Back Down
Never Back Down: Revolt
Beautiful Disaster
Never Back Down 2: The Beatdown
Undisputed III: Redemption
Unleashed
...All the Marbles
Never Back Down: No Surrender
Wrong Turn 2: Dead End
Die Hart
Kill Bill: The Whole Bloody Affair
Born a Champion
Female Fight Squad
Code 3
Kung Pow: Enter the Fist
Cagefighter: Worlds Collide
In Hell
Blade: Trinity
Kung Fu Panda: Secrets of the Furious Five
Parallels
