On Wednesday, wide receiver Danny Amendola (foot) did not practice, and according to reports, was in a walking boot, which is believed to be an indication that his availability to play Sunday may be in question.
Also out for the Rams were running back Steven Jackson (foot) and tight end Lance Kendricks (knee), although indications are that both will play against Arizona.
With Amendola possibly out, and if Kendricks is also unable to play, Sam Bradford could be without his number one and number three pass-catchers on the year.
Linebacker Mario Haggan also missed practiced (elbow), which is no surprise, as he is expected to be out a few weeks.
Arizona travels to St. Louis for Sunday's showdown. A win would improve the Cardinals to 2-2 in the NFC West and a game shy of .500 for the year.