Dolphins vs. Colts 2012 injury report: Ryan Tannehill limited in practice again

Miami Dolphins starting quarterback Ryan Tannehill was limited in practice for the second straight day Thursday with a left knee injury.

Tannehill was injured in the first quarter of Miami's 30-9 win over the New York Jets Sunday, but an MRI taken Monday showed no structural damage and the rookie is optimistic about playing this Sunday against fellow first-round pick Andrew Luck.

Three Dolphins were unable to practice Thursday, led by starting cornerback Richard Marshall. Marshall has missed the last three games due to a back injury he suffered in Week 2 against the Oakland Raiders. Backup defensive tackle Tony McDaniel missed his second straight day with a knee injury and wide receiver Jabar Gaffney missed Thursday's practice due to non-football reasons.

Along with Tannehill, center Mike Pouncey (Achilles), wide receiver Brian Hartline (groin) and linebacker Karlos Dansby (bicep) were all limited in practice Thursday. Quarterback Matt Moore (calf), running back Daniel Thomas (elbow) and linebacker Jason Trusnik (forearm) were able to fully practice today.

The Colts had four starters unable to practice Thursday, with running back Donald Brown (knee), tight end Coby Fleener (shoulder), linebacker Robert Mathis (knee/back) and cornerback Vontae Davis (knee) unable to practice Thursday.

Offensive tackle Jeff Linkenbach was the only player on the Colts' roster limited in practice with a head injury. Indianapolis had six players that were able to participate fully in practice Thursday, including outside linebacker Dwight Freeney (ankle) and quarterback Andrew Luck (knee).