LOS ANGELES -- MMA Fighting's Ariel Helwani and Dave Doyle take a closer look at the top storylines heading into UFC on FOX 4, including the light heavyweight showdown between former UFC champion Shogun Rua and Brandon Vera. UFC on FOX 4, which will take place Saturday night at 8 p.m. ET on FOX, also features a co-main event of Lyoto Machida and Ryan Bader.
Check out the preview below.