Cardinals running back Beanie Wells sat out practice on Thursday with a sore right knee and his status for Week 1 of the season is in doubt. "We'll see," coach Ken Whisenhunt said. "If he can make the kind of progress he's made the last couple of days then we'll see where he is on game day." Arizona has three other running backs and they plan to be cautious. "What concerns me is I don't want this to be something that in week 12 or week 13 or week 14 that you're having issues with," the coach said. "Like we said earlier in the week, we're going to be conservative on it. If we feel like Beanie's made enough progress by Sunday, then he'll play. If we don't, then like I said, I feel very strong at that position."