Miami Dolphins quarterback Jay Fiedler said he'll start Sunday at Buffalo despite missing practice time this week with a cracked rib.

"I'm playing and I'm good to go'', he said Friday. Fiedler aggravated the injury 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.