Corporate America's retreat from Michael Vick accelerated Friday, with Nike suspending his endorsement contract without pay and Reebok halting sales of jerseys bearing his name.

The moves came one day after Vick, the exiled Falcons quarterback, pleaded not guilty in Richmond to federal dogfighting charges.

The actions by the mega-companies Nike and Reebok punctuated a hard, fast fall for an athlete who until recently was one of the most marketable in American sports.

"Michael has written a new script for how not to make your endorsees happy," said Paul Swangard, managing director of the Warsaw Sports Marketing Center at the University of Oregon.

In addition to suspending Vick's lucrative endorsement contract, athletic-shoe giant Nike said it "will not sell any more Michael Vick product" — shoes, shirts, etc. — at company-owned retail outlets "at this time."

"Nike is concerned by the serious and highly disturbing allegations made against [Vick]," the company said in a statement, "and we consider any cruelty to animals inhumane and abhorrent."

Nike, with whom Vick has had an endorsement deal since entering the NFL, stopped short of terminating the contract altogether, saying: "We do believe that [Vick] should be afforded the same due process as any citizen in the United States."

Reebok, the sports-apparel giant, does not have an endorsement deal with Vick, but as the official outfitter of the NFL's 32 teams, it sells jerseys bearing the names of all of the league's players — all except one, as of Friday.

The company said it will stop selling Vick's No. 7 Falcons jersey at retail stores and on-line.

"Reebok is as disturbed as everyone else is about the allegations and did not feel there was any other choice but to suspend the sale of his jersey," Reebok spokeswoman Denise Kaigler said.

She said this is the first time Reebok has chosen not to sell the jersey of a specific player since becoming the league's apparel supplier in 2001. She had "lost count" of the e-mails received Friday about the decision, she said, and "100 percent of them have been completely supportive" of the company's stance.

Also distancing itself from Vick on Friday was a major trading-card company, Donruss.

The company has decided to remove Vick's card from all future 2007 releases, according to Beckett Media, which covers the collectibles industry.

Beckett said that Donross took the action because of company owner Ann Powell's love of dogs. Her five dogs accompany her to work daily and "enjoy virtually free reign" inside corporate headquarters, Beckett reported.

The actions of corporate America mirror those of the NFL, which earlier this week halted sales of Vick's jersey on its nflshop.com Web site.

"We have suspended sales of Vick-related merchandise on nflshop," NFL spokesman Brian McCarthy confirmed. That includes jerseys, autographed balls and other memorabilia.

McCarthy said it's "not appropriate under the circumstances" to sell Vick items.

Nike's decision to stop selling Vick merchandise at company-owned outlets came eight days after the shoe giant announced it would suspend next month's scheduled release of the latest product bearing his name, the Zoom Vick V shoe. When announcing the suspension of that product, Nike had said it would continue to sell existing Vick merchandise.

The company changed that stance late Friday, and its new position was met with approval from People for the Ethical Treatment of Animals (PETA) and the Humane Society of the United States.

After Nike suspended Vick's contract without pay, PETA called off protests planned for Monday outside NikeTown stores across the country.

Also Friday, sporting good stores Dick's Sporting Goods and the Sports Authority appeared to have removed Vick jerseys from their inventories. Multiple metro Atlanta locations contacted said they are not carrying Vick jerseys, but deferred questions to their respective corporate offices. Dick's spokesman Jeff Hennion had no comment; messages to the Sports Authority were not returned.

Vick jerseys were still for sale at Champs Sports stores and at the team's Falcons 365 locations.