Anthony Pettis knows he made a mistake dropping down to featherweight.

Now, the former UFC champion is working on getting his lightweight belt back starting Saturday night with Dustin Poirier at UFC Fight Night 120.

Pettis on his keys to beating Poirier: “I’ve got to put him on his heels. I can’t let him move forward. He’s a slow starter. He can’t put me and my back against the cage, so for us put him on his heels and punish him is really important.”

Pettis on Poirier’s style: “He’s a southpaw but doesn’t throw too many kicks. I’m ready to expose his mistakes. Last fight I played it safe, but this time I’m going for the kill.”

Pettis on getting back to the title: “It’s a long road. There are so many good guys. I’m excited to feel the way I do. I’m ready to go.”

Pettis on moving back from 145 to 155: “My goal was becoming a champion in two weight classes. But I can’t make the weight. I’m ready to go out there and show people what I can do.”