Kaepernick had been relatively quiet since he threw a game-ending interception in the NFC Championship Game, which was followed by Sherman making a choke sign in Kaepernick's direction and then delivering the postgame interview rant.
"Did that make you feel better about yourself? Then go ahead. Because I'm not worried about you," Kaepernick told Bart Hubbuch of the New York Post.
Kaepernick, speaking with ESPN Radio's "Mike & Mike," added, "To me, it was ridiculous. But if that's what you need to do to make yourself feel like a better player, you have to tell everyone I'm the best corner in the league, go ahead and tell them."
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Richie Incognito's attorney says former Miami Dolphins offensive lineman Jonathan Martin's text messages were just as offensive as the ones sent to him by his team-mate.
Mark Schamel, who represents Incognito, called on Martin to take responsibility for his actions.
"Richie Incognito has owned his inappropriate comments, despite the fact that they were made in jest, and it is time for Jonathan Martin to do the same," Schamel said.
"The coarse and unacceptable comments and text messages that were sent to Jonathan Martin were of the same poor taste as those sent by him. All of these communications were provided to Ted Wells and the NFL investigation. What they show is banter between friends, not bullying."
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Buffalo Bills quarterback EJ Manuel has confirmed that he underwent a second surgery on his left knee earlier this month.
Manuel said he is still rehabbing, but feels he has effectively put the knee problems behind him.
"The knee injury feels a lot better now," Manuel told reporters attending the Super Bowl. "I've got everything resolved and behind me. It was a minor procedure."
Manuel said the injury that required the procedure was the one he suffered in the preseason game against the Minnesota Vikings last August.
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A sports collector has filed a lawsuit against the New York Giants and quarterback Eli Manning alleging they created fake "game-worn" football memorabilia in order to pass it off as real and sell it, the New York Post reported.
The allegations, which are part of a lawsuit filed Wednesday by Eric Inselberg in Bergen County Superior Court, include charges of civil racketeering, breach of contract, malicious prosecution and trade libel, and claim that Manning participated because he wanted to keep certain items for his personal collection, according to the Post article.
The Giants denied the allegations.
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Arizona Cardinals wide receiver Larry Fitzgerald, who has a $18 million salary cap number for the 2014 season, has said that he is open to restructuring his contract.
Fitzgerald, who turns 31 in August, is set to make $12.75 million in 2014 and even more over the final four years of the deal.
A restructure would push the cap hit deeper into the contract. His cap number is already $21.5 million for the 2015 season, according to ProFootballTalk.
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DeMaurice Smith, executive director of the NFL Players Association, has roundly applauded the effort by Northwestern football players striving to form a union.
"You can rarely understand what courage it would take to step out of that role as an athlete who generally responds to whatever a coach says," Smith said.
Quarterback Kain Colter called the NCAA a dictatorship at a press conference on Tuesday. Colter, who is training to enter the 2014 NFL Draft, was not in attendance for the NFLPA press conference on Thursday. But College Athletes Players Association founder and president Ramogi Huma was in the ballroom and was recognised by Smith.