The event is expected to be headlined by a Middleweight Championship bout between the current champion Chris Weidman and former UFC Light Heavyweight Champion Lyoto Machida. The bout was originally scheduled to headline UFC 173 on May 24, 2014. However, the bout was delayed after Weidman sustained a knee injury which required a minor surgery. Main event: Middleweight Title Fight - Chris Weidman (c) vs. Lyoto Machida (#3) Women's Bantamweight Title Fight - Ronda Rousey (c) vs. Alexis Davis (#2) Heavyweight - Stefan Struve (#12) vs. Matt Mitrione Middleweight - Uriah Hall vs. Thiago Santos Bantamweight - Marcus Brimage vs. Russell Doane
