LOS ANGELES – The Bellator MMA World Grand Prix 2018 gets underway Saturday night, with Quinton Jackson taking on Chael Sonnen in an opening-round bout at Bellator 192. “Rampage” and Sonnen have engaged in a few staredowns in the build-up to their headliner at The Forum in Inglewood, Calif., which airs on Paramount (formerly Spike) following prelims streamed on MMAjunkie.