"Oakland Raiders OLT Khalif Barnes was injured during Tuesday morning's training camp practice. Barnes, who signed a one-year, $1.2 million deal with Oakland in March, suffered a hairline fracture to his left ankle, a league source told Scout.com.
Barnes is expected to miss four to six weeks, which puts him out until at least the beginning of the regular season. Third-year OT Mario Henderson is expected to fill in at left tackle."
Stay tuned for updates on this breaking story from SBI's Mike Wagaman.