Submission Underground 28 took place Sunday, October 31, 2021 with 10 fights in Portland, Oregon.

Bellator 210: Njokuani vs. Salter took place on November 30, 2018 at the WinStar World Casino and Resort in Thackerville, Oklahoma. The event aired live on Paramount Network and DAZN. The main event featured a middleweight bout between John Salter and Chidi Njokuani.

Bellator 229: Koreshkov vs. Larkin took place on October 4, 2019 at Pechanga Resort and Casino in Temecula, California. The event took place on Paramount Network and DAZN. The event featured a welterweight bout between former Bellator Welterweight Champion Andrey Koreshkov and Lorenz Larkin.

Bellator 181: Girtz vs. Campos 3 took place on July 14, 2017, at the WinStar World Casino in Thackerville, Oklahoma. The main event featured Brandon Girtz against Derek Campos in a rubber match. Campos won the pair's initial meeting in June 2013 at Bellator 96 by unanimous decision. Girtz avenged the loss in November 2015 at Bellator 146, where he won by knockout in the first round.

Bellator 192: Rampage vs. Sonnen took place on January 20, 2018 at The Forum in Inglewood, California. The event aired on Paramount Network as the first Bellator event to air on the network since its re-branding from Spike. This card featured the first bout in the 2018 Bellator Heavyweight World Grand Prix Tournament between Chael Sonnen and Quinton 'Rampage' Jackson.

UFC 175: Weidman vs. Machida was a mixed martial arts event held on July 5, 2014, at Mandalay Bay Events Center in Las Vegas, Nevada.