UFC 168: Weidman vs. Silva 2 was a mixed martial arts event held on December 28, 2013, at the MGM Grand Garden Arena in Las Vegas, Nevada.

[4] The two previously met at UFC 162, with Weidman winning via KO in the second round and earning the title.

Co-featured was a UFC Women's Bantamweight Championship bout between current champion Ronda Rousey and Miesha Tate.

[6][7] However, Zingano was pulled from the bout, and subsequently as coach for The Ultimate Fighter, after it was announced that she had suffered a knee injury and would be sidelined for several months.

[8] Shane del Rosario was expected to face Guto Inocente at the event, but both men pulled out of the bout, citing injuries.