Submission Underground 16 took place Sunday, July 12, 2020 with 10 fights in Portland, Oregon.
Submission Underground 12 took place Sunday, March 29, 2020 with 9 fights in Portland, Oregon.
Submission Underground 11 took place Sunday, February 23, 2020 with 3 fights at Roseland Theater in Portland, Oregon.
Submission Underground 10 took place Sunday, December 22, 2019 with 8 fights at Roseland Theater in Portland, Oregon.
