Stallworth was headed toward the beach when he hit Mario Reyes, 59, about 7 a.m., Miami Beach police spokesman Juan Sanchez said. Reyes was taken to a nearby trauma center, where he was pronounced dead about an hour later. Reyes was near a crosswalk, but it's not clear whether he was crossing legally.
Stallworth, 28, was cooperating, and no charges have been filed, Sanchez said. Officers drew blood to test for drugs or alcohol, which is routine. Sanchez said results from the blood test could take three days to three weeks.
Police would not say where Stallworth was coming from or where he was headed, and Sanchez didn't have any more information about Reyes.
Miami-Dade County property records show Stallworth owns two condominiums in a building on Biscayne Boulevard in Miami not far from the causeway and another condo in a different building in Miami.
The Browns said in a statement they were aware of what happened.
Stallworth signed a seven-year, $35 million contract with the Browns as a free agent before last season but made just seven starts because of a hamstring injury. He was due a $4.75 million signing bonus Friday.
Jets:: New York agreed to terms with defensive end Marques Douglas, a person familiar with the contract told the Associated Press. Douglas is the third former Ravens defensive player brought in by new coach Rex Ryan, who was the Ravens' defensive coordinator the previous seven seasons. Douglas, a career backup, joins linebacker Bart Scott and safety Jim Leonhard as players to follow Ryan to New York.
Lions-Seahawks:: Detroit acquired Pro Bowl linebacker Julian Peterson from Seattle for defensive tackle Cory Redding and a fifth-round pick in next month's NFL draft. Both players must pass physicals to complete the trade. During their winless season, the lack of talent at linebacker was one of the Lions' glaring problems.
Packers: : Green Bay will retire Brett Favre's No. 4 jersey at some point, and team president and CEO Mark Murphy envisions a day when Favre is again part of the family. But given the messy divorce between Favre and the Packers last year, the reconciliation - and the ceremony - probably won't happen this year. "I don't anticipate it this season," Murphy said, speaking to reporters at the team's annual "fan fest" at Lambeau Field. "Obviously we will do it. We've made that commitment. He deserves to have his number retired. I just think both sides need some time."
Jaguars: : Wide receiver Matt Jones was released a day early yesterday from a weeklong stay in an Arkansas jail for drinking beer in violation of his plea agreement for a drug charge.