ONE 166

It also the second visit to Middle East, since ONE FC: Reign of Champions in Dubai, United Arab Emirates in August 2014.

[5] A ONE Featherweight World Championship unification rematch between current champion Tang Kai and former champion/current interim title holder Thanh Le took place at the co-main event.

[7] The pairing was previously scheduled to meet at ONE Fight Night 12, but Tang withdraw from the bout due to a knee injury.

[12] A ONE Welterweight Submission Grappling World Championship bout between current champion Tye Ruotolo and Izaak Michell was expected to take place at the event.

[14] However, Nong-O was removed from the bout for unknown reason and was replaced by promotional newcomer Zafer Sayik in a catchweight of 147.75 pounds.