HENDERSON, Nev. (AP) — Raiders left tackle Kolton Miller is heading to injured reserve because of a high ankle sprain, a person with knowledge of the injury told The Associated Press on Tuesday, dealing Las Vegas the loss of its best offensive lineman.

The person spoke to the AP on condition of anonymity because the Raiders have not made an announcement regarding a medical update.

A CT scan also showed that Miller suffered a hairline fracture, according to NFL Network.

By being placed on IR, Miller will have to miss at least four games.

Miller was injured with 43 seconds left in the Raiders' 25-24 loss to Chicago on Sunday.

It's a significant loss for an offensive line that struggled the first three weeks before playing its best game against the Bears. Miller has been easily the R

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