Dolphins vs. Cardinals injury report: Reggie Bush, Darnell Dockett headline list

Injuries are starting to pile up for both the Dolphins and the Cardinals, as both teams have key players missing practice this week who may not be able to go on Sunday.

There were 8 Miami players on Thursday's list, with 3 -- RB Reggie Bush (knee), DT Tony McDaniel (knee) and LB Austin Spitler (knee) -- held out of practice entirely.

Losing Bush, who was knocked out of last week's game against the Jets, would be a huge blow for the Dolphins, since he's been instrumental in keeping some of the pressure off of rookie QB Ryan Tannehill. Bush has 302 yards and 2 TD's with a whopping 6.0 yards per carry in 2012.

The 3-0 Cardinals, meanwhile, have an even lengthier list of players being held out of practice, most notably starting DT Darnell Dockett (hamstring) and TE Todd Heap (knee).

Arizona has already placed starting RB Beanie Wells on IR this week with a turf toe injury.