GLENDALE, Ariz. – Patrick Peterson of the Arizona Cardinals says the debate over who is the best cornerback in the league will continue and his opinion will never change: He is the best.

“As a man, I can’t fathom putting another guy in front of me,” he said.

Peterson has jousted with Richard Sherman of the Seahawks over which one is the best at the position. Speaking at training camp Sunday, Peterson also mentioned two others “in the conversation,” Joe Haden of Cleveland and Darrelle Revis of New England.

“All of us have the ability to be the best in the league,” Peterson said. “And all of us are the best at something at the cornerback position. I believe that the competition is real, and I love it. It’s just going to make all four of us play that much better and that much harder.”

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Peterson, entering his fourth pro season, said he has been told he won’t return punts or play on offense this season — and that will help him focus entirely on his cornerback job.

“I think that’s just going to take my game to another level now,” the 24-year-old said, “because now I don’t have to focus on the punt return, try to remember the offensive plays, or things like that.

“I can just hone in on playing defensive back and being the best player that I can be.”

Peterson already believes no one is better.

“Do I feel I’m the best cornerback? Absolutely,” he said. “That answer is never going to change, but at the end of the day that conversation is going to always come up.”

Peterson wants to get paid as if he is the best, but that hasn’t happened yet.

Sherman has a four-year extension that could pay him more than $58 million through 2018, with $40 million guaranteed. Haden got a five-year, $68 million extension, with $45 million guaranteed.

Because Peterson was a first-round draft pick, the Cardinals had a fifth-year option on his contract, and they exercised it.

“I’m here to play football, got two years left on my deal and I want to do the best I can to help this team win,” Peterson said.


• Reserve running back LaMichael James of the San Francisco 49ers left the practice field with an apparently dislocated left elbow and could be out for a month, according to NFL Network.

James had become a top contender for the No. 2 running-back role behind starter Frank Gore on Friday, after Kendall Hunter suffered a torn knee ligament that will force him to miss the season.

• The Denver Broncos practiced before 21,933 at Sports Authority Field.