Anthony Pettis Changed Up Everything Ahead Of UFC On FOX 21

[embed]https://www.youtube.com/watch?v=HVQWqMvjokE[/embed]Former UFC lightweight champion Anthony Pettis once sat atop the MMA world.
He was featured on a box of Wheaties and pushed as the "next big thing."Now, "Showtime" is competing at featherweight and will make his debut there this Saturday night at UFC on FOX 21 vs. Charles Oliveira.For Pettis, the decision to switch weight classes has also come with other changes to his routine.“I haven’t even watched tape on this guy," he said