-- Former WWE announcer Todd Grisham is the new host of ESPN's MMA Live, which airs on ESPN2, taking the job over from Jon Anik. Anik, who has served as a top ESPN host for nearly six years, was recently signed by the UFC to handle play-by-play duties for upcoming UFC events to air on FX and FUEL TV.

-- Perhaps the most important event in UFC history takes place tonight, as the UFC makes its network debut on FOX. The event airs at 9 PM ET, and features a huge UFC heavyweight title fight between champion Cain Velasquez and challenger Junior Dos Santos. If you've never watched the UFC, or have only seen a handful of events in the past, I would strongly suggest checking this one out. It airs for FREE on FOX, and will take place before the Juan Manuel Marquez - Manny Pacquiao fight later tonight.

-- The winner of tonight's UFC title fight between Velasquez and Dos Santos will face the winner of the upcoming Brock Lesnar - Alistair Overeem fight. Lesnar will be at tonight's event, serving as an analyst.

-- You can check out a preview for tonight's UFC on FOX event below:

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