"I'm playing and I'm good to go," said Fiedler, who aggravated the injury last Sunday in a 24-10 loss to New England and sat out the end of the game.
He missed practice Wednesday but returned Thursday.
Sammy Morris will become the fourth player to start at running
back this season for the winless Dolphins, replacing Leonard Henry.
Morris has been slowed by an ankle injury and concussion and
limited to eight yards in five carries this season.
Morris spent the first four years of his career in Buffalo
before signing with the Dolphins (0-5) in March.
"There's a little something different playing against guys I
played with for four years," he said.
Henry and Brock Forsey will back up Morris, coach Dave Wannstedt said.