Former Bellator champion Will Brooks picked up a win in his debut with the Professional Fighters League Thursday night, besting Luiz Firmino via decision.

The bout served as the main event for PFL 2 from the Chicago Theater in Chicago, airing live on NBC Sports Network.

Brooks had a tough run in the UFC after leaving Bellator as lightweight champion. He eventually left the promotion and signed with the PFL.

Brian Foster scored himself a third round finish over Ramsey Nijem, landing with a knee and following up on the ground with strikes.

Kayla Harrison, an Olympic medalist, made her MMA debut with a first round submission via armbar over Brittney Elkin. Efrain Escudero topped Jason High and Sean O’Connell earned a second round TKO over Ronny Markes.

Among the prelim winners were Brandon Halsey, Vinny Magalhaes and Robert Watley.

Complete results are below:

Will Brooks def. Luiz Firmino via unanimous decision (30-27, 30-27, 30-27)

Brian Foster def. Ramsey Nijem via KO (strikes) at :23 of Round 3

Kayla Harrison def. Brittney Elkin via submission (armbar) at 3:18 of Round 1

Efrain Escudero def. Jason High via submission (guillotine) at :35 of Round 3

Sean O’Connell def. Ronny Markes via TKO (strikes) at :41 of Round 2

Brandon Halsey def. Smealinho Rama via TKO (cut) at :01 of Round 3

Islam Mamedov def. Yuki Kawana via unanimous decision (30-27, 30-27, 29-28)

Vinny Magalhaes def. Jamie Abdallah via submission (rear-naked choke) at 1:37 of Round 1

Rakim Cleveland def. Rashid Yusupov via TKO (injury) at :01 of Round 3

Maxim Grishin def. Jason Butcher via TKO (knee injury) at 1:40 of Round 1

Robert Watley def. Thiago Tavares via TKO (accidental low blow by Watley) at :35 of Round 2

Natan Schulte def. Chris Wade via unanimous decision (30-26, 30-26, 29-28)

Dan Spohn def. Bazigit Ataev via TKO (strikes) at 4:29 of Round 3