UFC 285 Countdown previews the return of former light heavyweight champ Jon Jones, who faces Ciryl Gane for the vacant heavyweight belt. UFC 285 main card action kicks off on Saturday, March 4, at 10pm ET / 7pm PT.Heavyweight: Jon Jones vs. Ciryl GaneWomen's Flyweight: Valentina Shevchenko (c)vs. Alexa GrassoWelterweight: Geoff Neal vs. Shavkat RakhmonovLightweight: Mateusz Gamrot vs. Jalin TurnerMiddleweight: Bo Nickal vs. Jamie PickettPreliminary card (ESPNews / ESPN+)Bantamweight: Cody Garbrandt vs. Trevin JonesMiddleweight: Derek Brunson vs. Dricus du PlessisWomen's Flyweight: Viviane Araújo vs. Amanda RibasMiddleweight: Julian Marquez vs. Marc-André BarriaultEarly preliminary card (ESPN+ / UFC Fight Pass)Welterweight: Ian Garry vs. Song KenanBantamweight: Cameron Saaiman vs. Leomana MartinezWomen's Strawweight: Jessica Penne vs. Tabatha RicciBantamweight: Da’Mon Blackshear vs. Farid BasharatLightweight: Esteban Ribovics vs. Loik Radzhabov