ONE Championship presented Iron Will on Saturday, March 24th, from the Impact Arena in Bangkok, Thailand. The event was headlined by a bantamweight title between Bibianio Fernandes and Martin Nguyen.

Main Card (Live Online PPV 9:30 AM EST)

-Bibiano Fernandes defeated Martin Nguyen by Split Secision
-Jeremy Miado defeated Dejdamrong Sor Amnuaysirichoke by Knockout (Punch, Round 1, 1:29)
-Shannon Wiratchai defeated Rahul Raju by Knockout (Punch, Round 1, 0:21)
-Angelie Sabanal defeated Rika Ishige by Unanimous Decision
-Saygid Guseyn Arslanaliev defeated Tetsuya Yamada by Submission (Armbar, Round 3, 2:51)
-Waqar Umar defeated Zhao Zhi Kang by Submission (RNC, Round 1, 4:21)
-Garry Tonon defeated Richard Corminal by TKO (Elbows, Round 2, 3:40)

Preliminary Card (Live on Twitter, 8:00 AM EST)

-Kritsada Kongsrichai defeated Robin Catalan by TKO (Slam, Round 1, 1:40)
-Alain Ngalani defeated Ariunbold Tur-Ochir by Split Decision
-Gilberto Galvao defeated Jake Butler by TKO (Knee Injury, Round 2, 0:07)
-Sunoto Peringkat defeated Hisyam Samsudin by Unanimous Decision