In doing so, he joins older brother -- and current Lightweight champion -- Anthony Pettis with the Zuffa-owned mixed martial arts (MMA) promotion, the latest duo of brothers to simultaneously compete inside the Octagon.
And while the pressure of walking in the footsteps of an older brother who has held numerous titles in mixed martial arts (MMA) looms, Sergio doesn't seem too fazed, saying that he has everything it takes to live up to the expectations that come with holding the recognizable surname.
He explains during a recent appearance on "The MMA Hour:"
"There is more pressure. People expect me to do all the stuff he's doing by jumping off the cages and all of that stuff. I have that in my arsenal and it's just a matter of time before I show it. I like the fact that they talk about my brother when they talk about me. We came up together, we're family so that's how it should be."
Anthony garnered the "Showtime" monicker thanks to his flashy style of striking that has earned him countless air time on UFC and World Extreme Cagefighting (WEC) highlight reels. While younger brother Sergio is confident he can mirror his brothers style, at the end of the day, the he claims he is a more technical fighter.
"I don't take a lot of risks like Anthony, I'm much more technical, but when I get the chance, I will throw some crazy stuff. I have a couple of things that I'm going to go out there and throw (at UFC 167), so it's going to be interesting."
Sure, Sergio doesn't mind being mentioned in the same breath as his world champion brother, but it's safe to say he'd like nothing more than to make a name of his own in the UFC ranks, carving his own swath of destruction starting with Campuzano in "Sin City."