[2][3] The event was the first that the UFC has hosted in the state of Missouri and the Kansas City metropolitan area.

[2] A UFC Flyweight Championship match between current champion Demetrious Johnson and Wilson Reis headlined this event.

[4] The pairing was originally booked for UFC 201, but Johnson pulled out due to an undisclosed injury and the bout was scrapped.

[6] However, as the announcement of the pairing began to circulate, Choi declined the bout, and as a result, Barao was rescheduled against a different opponent at another event.

[7] [8] The following fighters were awarded $50,000 bonuses:[9] With his win, Johnson tied Anderson Silva's record for most consecutive title defenses (10).