Mike Iupati injury to have knee surgery, Corey Peters hurts leg

The Arizona Cardinals suffered from the bite of the injury big last season. So far, they have not suffered many key injuries -- until recently.

Starting left guard Mike Iupati,who went down during practice on Monday, got some bad news. After head coach Bruce Arians didn't know the details when he spoke with the media Wednesday morning, ESPN's Adam Schefter reportedIupati is likely to need arthroscopic surgery and be out six to eight weeks. Locally, Mike Jurecki said it could be four to six weeks. Kent Somers confirmed Iupati would undergo surgery and that it is not season ending.

Either way, it is very possible the Cardinals will be without their big free agent acquisition to start the regular season.

In his place, Ted Larsen practiced at left guard with the first team in his place.

Another key player also got hurt in practice. Defensive lineman Corey Peters had to be carted off the field on Wednesday (although he did walk to the cart) after suffering some sort of lower leg or foot injury. Peters suffered an Achilles injury at the end of the 2013 season. This injury was to the other leg. There were no details as of Thursday morning about what the severity of the injury is.

If he has to miss any significant time, Arizona does have defensive line depth. Undrafted rookie Xavier Williams had played nose tackle with the second team and is an option to step in, Alameda Ta'amu can also play in his stead.