[2] The event was the fifth that the organization has hosted in Saitama, and first since UFC Fight Night: Barnett vs. Nelson in September 2015.

[4] On September 16, Rua withdrew from the fight due to a knee injury and was replaced by returning veteran, former UFC Middleweight Championship challenger Yushin Okami.

[5] Naoki Inoue was expected to face Jenel Lausa at the event, but pulled out on September 9 due to a dislocated shoulder.

As a result his bout with Charles Rosa was changed to a catchweight and the fight was initially expected to proceed as scheduled.

[7] Later that day, Hirota was pulled due to health and safety concerns, as he was deemed unfit to compete by the UFC medical team.