Beanie Wells limited in practice

TEMPE, Ariz. -- Arizona Cardinals running back Beanie Wells was limited in practice on Thursday with a hamstring injury.

The problem was listed on the team's injury report and, since he was fine on Wednesday, the injury apparently occurred in the practice.

He said in a tweet that the problem was not serious, joking that he just needed "to rest my wheels" and maybe change the oil.

The injury report came out after coach Ken Whisenhunt spoke to reporters.