Miami receiver Jabar Gaffney is sitting out the Dolphins' game against the Buffalo Bills on Thursday night because of a knee injury.
Gaffney, signed by Miami early last month after being released by the New England Patriots in the offseason, has four catches in three games.
Miami reserve defensive lineman Tony McDaniel will miss his fifth game because of a knee injury.
The Bills were without running back Fred Jackson, who was ruled out earlier after sustaining a concussion Sunday in a loss to the Patriots, and defensive end Chris Kelsay and Aaron Williams. Kelsay is sidelined by a neck injury, and Williams has a knee injury.