FLAGSTAFF, Ariz. � Arizona running back Beanie Wells missed another workout with a sprained right ankle on Monday, raising doubts that he�ll play in the Cardinals� preseason opener.

Wells ran and did agility drills on a side field during a morning practice at Northern Arizona University. Wells said the ankle is improving, but he didn�t know if he�d be available when the Cardinals open the preseason at Pittsburgh on Thursday night.
The first-round pick out of Ohio State sprained the ankle in his first practice on Aug. 1, shortly after agreeing to a five-year, $11.8 million contract, with $6.3 million guaranteed.