Story bySimon Samano, MMA JunkieSat, December 6, 2025 at 11:30 AM UTC·1 min readWill Merab Dvalishvili make history, or will Petr Yan get his revenge at UFC 323? Their bantamweight championship bout scheduled for five rounds is taking place Saturday, December 6 at T-Mobile Arena in Las Vegas. Dvalishvili (21-4 MMA, 14-2 UFC) has been on a roll since September 2018, compiling 14 wins in a row during that time span, which stands as the fourth-longest winning streak in UFC history behind Anderson Silva (16), Islam Makhachev (16) and Kamaru Usman (15). A win Saturday would make Dvalishvili the first fighter in UFC history to successfully defend their championship four times in a calendar year.