When Anthony Pettis enters the cage Saturday in Dallas, to defend his UFC Lightweight Championship against Rafael Dos Anjos at UFC 185, he will have substantial momentum.

The champion is on a five fight winning streak, with finishes in his last four fights.

But, since those five fights date back almost four years, the man they call “Showtime” has been open to some criticism about a perceived lack of activity. Compare to lightweight contender Donald Cerrone, who fought five times last year.

The fight will be Pettis’ second bout in four months, and trainer Duke Roufus says that the champ is turning over a new leaf now — returning to the form which saw Pettis win four straight bouts in the WEC promotion in a busy 2010 alone.

“This is going to be a fight that’s won on the feet,” Roufus said on The MMA Hour with Ariel Helwani (transcribed by Chuck Mindenhall). “I got to tell you, Anthony, when he ran off that five-fight streak in the WEC and had some amazing performances — a Pettis that’s fighting this often is the most dangerous Pettis you’ll see. You don’t want to let this kid starting fighting too often if you’re the other contenders.”

Roufus compared his charge to boxing’s pound-for-pound entrant (and PPV king) Floyd Mayweather, Jr.

“He said the other day I could do this four times a year easy,” Roufus said. “That’s how easy the training camps are for him. Not because he’s lazy, but because he is like the [Floyd] Mayweather of our sport, hard work and dedicated. He’s the guy [that says], ‘hey, let’s do one more round,’ or ‘hey, let’s do another session on Saturday.’ He’s the one asking me to schedule more as opposed to me telling him to schedule more. That’s why he’s going to win.”