NAPA, Calif. -- Oakland Raiders right guard Gabe Jackson sustained an MCL injury in his left knee and he's expected to be out two months, a source confirmed to ESPN.
Jackson was carted off the practice field late in Thursday's joint practice with the Los Angeles Rams. He was rolled up on from behind during a live team drill, a few minutes after being involved in a scrap with Rams defensive tackle Aaron Donald.
Jackson was later seen on crutches and wearing a brace on his left knee. The Athletic first reported the extent of Jackson's injury.