All news continues to be bad news in matters concerning the Oakland Raiders' offensive line. ESPN reported Thursday that left tackle Menelik Watson is expected to miss one month after undergoing arthroscopic surgery on a torn lateral meniscus in his knee. Watson started at left tackle in the Raiders' preseason finale, but he was forced to the sideline with knee discomfort in the week leading up to the season opener. Khalif Barnes took his place in the lineup and started against the Indianapolis Colts. Watson was actually Plan C for the Raiders at left tackle. Source: NFL.com